diff --git a/README.md b/README.md
index 60024b7..8711c9b 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,39 @@ It shows the estimated energy production for the next hours and up to 16 days.
 <img src="fastlane/metadata/android/en-US/images/phoneScreenshots/01.png" width="150"/><img src="fastlane/metadata/android/en-US/images/phoneScreenshots/02.png" width="150"/> <img src="fastlane/metadata/android/en-US/images/phoneScreenshots/03.png" width="150"/> 
 
 
+## Parameters
+
+#### Latitude [°] 
+Latitude specifies the north–south position of your solar power plant. It ranges from –90° at the south pole to 90° at the north pole.
+
+#### Longitude [°]
+Longitude specifies the east–west position of your solar power plant. The prime meridian defines 0° longitude. Positive longitudes are east of the prime meridian, negative ones are west.
+
+#### Azimuth [°]
+Azimuth is the horizontal direction of your solar power plant. 0° equals North, 90° equals East, 180° equals South, 270° equals West.
+
+#### Tilt [°]
+Tilt is the vertical direction of your solar power plant. 0° means it points up towards the the sky, 90° means it has a vertical orientation and points towards the horizon.
+
+#### Cells max power [W]
+Maximum power your solar cells can deliver.
+
+#### Cells efficiency  [%]
+Portion of energy in the form of sunlight that can be converted into electricity by the solar cell.
+
+#### Cell area [m\u00b2]
+Size of the active area your solar panel.
+
+#### Diffuse radiation efficiency  [%]
+Efficiency of your solar power plant for diffuse radiation. When pointing up it should be around 100%, when pointing to the horizon it may be around 50%. 
+Also depends on reflections etc.
+
+#### Inverter power  [W]
+Maximum power of your inverter. If it is lower than the maximum power of your panels the output power of your system will be limited by this parameter.
+
+#### Inverter efficiency  [%] 
+Efficiency of your inverter.
+
 ## License
 
 This app is licensed under the GPLv3.
diff --git a/app/src/main/java/org/woheller69/weather/SolarPowerPlant.java b/app/src/main/java/org/woheller69/weather/SolarPowerPlant.java
index 6f4b7c3..c90dd57 100644
--- a/app/src/main/java/org/woheller69/weather/SolarPowerPlant.java
+++ b/app/src/main/java/org/woheller69/weather/SolarPowerPlant.java
@@ -15,22 +15,22 @@ public class SolarPowerPlant {
     double cellsArea;
     double cellsEfficiency;
     double diffuseEfficiency;
-    double converterPowerLimit;
-    double converterEfficiency;
+    double inverterPowerLimit;
+    double inverterEfficiency;
     double azimuthAngle;
-    double elevationAngle;
+    double tiltAngle;
 
-    public SolarPowerPlant(double latitude, double longitude, double cellsMaxPower, double cellsArea, double cellsEfficiency, double diffuseEfficiency, double converterPowerLimit, double converterEfficiency, double azimuthAngle, double elevationAngle) {
+    public SolarPowerPlant(double latitude, double longitude, double cellsMaxPower, double cellsArea, double cellsEfficiency, double diffuseEfficiency, double inverterPowerLimit, double inverterEfficiency, double azimuthAngle, double tiltAngle) {
         this.latitude = latitude;
         this.longitude = longitude;
         this.cellsMaxPower = cellsMaxPower;
         this.cellsArea = cellsArea;
         this.cellsEfficiency = cellsEfficiency / 100;
         this.diffuseEfficiency = diffuseEfficiency / 100;
-        this.converterPowerLimit = converterPowerLimit;
-        this.converterEfficiency = converterEfficiency / 100;
+        this.inverterPowerLimit = inverterPowerLimit;
+        this.inverterEfficiency = inverterEfficiency / 100;
         this.azimuthAngle = azimuthAngle;
-        this.elevationAngle = elevationAngle;
+        this.tiltAngle = tiltAngle;
 
     }
 
@@ -48,7 +48,7 @@ public class SolarPowerPlant {
         double solarElevation = 90 - position.getZenithAngle();
 
         Double[] directionSun = {Math.sin(solarAzimuth / 180 * Math.PI) * Math.cos(solarElevation / 180 * Math.PI), Math.cos(solarAzimuth / 180 * Math.PI) * Math.cos(solarElevation / 180 * Math.PI), Math.sin(solarElevation / 180 * Math.PI)};
-        Double[] normalPanel = {Math.sin(azimuthAngle / 180 * Math.PI) * Math.cos((90 - elevationAngle) / 180 * Math.PI), Math.cos(azimuthAngle / 180 * Math.PI) * Math.cos((90 - elevationAngle) / 180 * Math.PI), Math.sin((90 - elevationAngle) / 180 * Math.PI)};
+        Double[] normalPanel = {Math.sin(azimuthAngle / 180 * Math.PI) * Math.cos((90 - tiltAngle) / 180 * Math.PI), Math.cos(azimuthAngle / 180 * Math.PI) * Math.cos((90 - tiltAngle) / 180 * Math.PI), Math.sin((90 - tiltAngle) / 180 * Math.PI)};
 
         double efficiency = 0;  //calculate scalar product of sunDirection and normalPanel vectors
         for (int j = 0; j < directionSun.length; j++) {
@@ -61,7 +61,7 @@ public class SolarPowerPlant {
 
         double dcPower = (solarPowerNormal * efficiency + solarPowerDiffuse * diffuseEfficiency )* cellsEfficiency * cellsArea;
 
-        double acPower = Math.min(dcPower * converterEfficiency, converterPowerLimit);
+        double acPower = Math.min(dcPower * inverterEfficiency, inverterPowerLimit);
 
         return (float) acPower;
     }
diff --git a/app/src/main/java/org/woheller69/weather/activities/ManageLocationsActivity.java b/app/src/main/java/org/woheller69/weather/activities/ManageLocationsActivity.java
index 42adf6b..e3b1cc0 100644
--- a/app/src/main/java/org/woheller69/weather/activities/ManageLocationsActivity.java
+++ b/app/src/main/java/org/woheller69/weather/activities/ManageLocationsActivity.java
@@ -122,26 +122,26 @@ public class ManageLocationsActivity extends NavigationActivity {
         EditText editLongitude = (EditText) dialogView.findViewById(R.id.EditLocation_Lon);
         EditText editCity = (EditText) dialogView.findViewById(R.id.EditLocation_Name);
         EditText editAzimuth = (EditText) dialogView.findViewById(R.id.EditLocation_Azimuth);
-        EditText editElevation = (EditText) dialogView.findViewById(R.id.EditLocation_Elevation);
+        EditText editTilt = (EditText) dialogView.findViewById(R.id.EditLocation_Tilt);
         EditText editCellsMaxPower = (EditText) dialogView.findViewById(R.id.EditLocation_Cell_Max_Power);
         EditText editCellsArea = (EditText) dialogView.findViewById(R.id.EditLocation_Cells_Area);
         EditText editCellsEfficiency = (EditText) dialogView.findViewById(R.id.EditLocation_Cell_Efficiency);
         EditText editDiffuseEfficiency = (EditText) dialogView.findViewById(R.id.EditLocation_Diffuse_Efficiency);
-        EditText editConverterPowerLimit = (EditText) dialogView.findViewById(R.id.EditLocation_Converter_Power_Limit);
-        EditText editConverterEfficiency = (EditText) dialogView.findViewById(R.id.EditLocation_Converter_Efficiency);
+        EditText editInverterPowerLimit = (EditText) dialogView.findViewById(R.id.EditLocation_Inverter_Power_Limit);
+        EditText editInverterEfficiency = (EditText) dialogView.findViewById(R.id.EditLocation_Inverter_Efficiency);
 
         editCity.setText(city.getCityName());
         editLatitude.setText(Float.toString(city.getLatitude()));
         editLongitude.setText(Float.toString(city.getLongitude()));
         editAzimuth.setText(Float.toString(city.getAzimuthAngle()));
-        editElevation.setText(Float.toString(city.getElevationAngle()));
+        editTilt.setText(Float.toString(city.getTiltAngle()));
         editCellsMaxPower.setText(Float.toString(city.getCellsMaxPower()));
         editCellsArea.setText(Float.toString(city.getCellsArea()));
         editCellsEfficiency.setText(Float.toString(city.getCellsEfficiency()));
         editDiffuseEfficiency.setText(Float.toString(city.getDiffuseEfficiency()));
-        editConverterPowerLimit.setText(Float.toString(city.getConverterPowerLimit()));
-        editConverterEfficiency.setText(Float.toString(city.getConverterEfficiency()));
-        editElevation.addTextChangedListener(new TextWatcher() {
+        editInverterPowerLimit.setText(Float.toString(city.getInverterPowerLimit()));
+        editInverterEfficiency.setText(Float.toString(city.getInverterEfficiency()));
+        editTilt.addTextChangedListener(new TextWatcher() {
             @Override
             public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { }
             @Override
@@ -149,8 +149,8 @@ public class ManageLocationsActivity extends NavigationActivity {
 
             @Override
             public void afterTextChanged(Editable editable) {
-                float elevation = Float.parseFloat("0"+editElevation.getText().toString());
-                int diffuseEfficiency = (int) (100-50 * elevation/90);
+                float tilt = Float.parseFloat("0"+editTilt.getText().toString());
+                int diffuseEfficiency = (int) (100-50 * tilt/90);
                 editDiffuseEfficiency.setText(Float.toString((float) diffuseEfficiency));
             }
         });
@@ -160,13 +160,13 @@ public class ManageLocationsActivity extends NavigationActivity {
                     Float.parseFloat("0"+editLatitude.getText().toString()),
                     Float.parseFloat("0"+editLongitude.getText().toString()),
                     Float.parseFloat("0"+editAzimuth.getText().toString()),
-                    Float.parseFloat("0"+editElevation.getText().toString()),
+                    Float.parseFloat("0"+editTilt.getText().toString()),
                     Float.parseFloat("0"+editCellsMaxPower.getText().toString()),
                     Float.parseFloat("0"+editCellsArea.getText().toString()),
                     Float.parseFloat("0"+editCellsEfficiency.getText().toString()),
                     Float.parseFloat("0"+editDiffuseEfficiency.getText().toString()),
-                    Float.parseFloat("0"+editConverterPowerLimit.getText().toString()),
-                    Float.parseFloat("0"+editConverterEfficiency.getText().toString())
+                    Float.parseFloat("0"+editInverterPowerLimit.getText().toString()),
+                    Float.parseFloat("0"+editInverterEfficiency.getText().toString())
                     );
         });
         alert.setNegativeButton(getString(R.string.dialog_add_close_button), (dialog, whichButton) -> {
diff --git a/app/src/main/java/org/woheller69/weather/database/CityToWatch.java b/app/src/main/java/org/woheller69/weather/database/CityToWatch.java
index 2d0a5e0..506fb19 100644
--- a/app/src/main/java/org/woheller69/weather/database/CityToWatch.java
+++ b/app/src/main/java/org/woheller69/weather/database/CityToWatch.java
@@ -16,10 +16,10 @@ public class CityToWatch {
     private float cellsArea;
     private float cellsEfficiency;
     private float diffuseEfficiency;
-    private float converterPowerLimit;
-    private float converterEfficiency;
+    private float inverterPowerLimit;
+    private float inverterEfficiency;
     private float azimuthAngle;
-    private float elevationAngle;
+    private float tiltAngle;
     private int rank;
 
     public CityToWatch() {
@@ -36,10 +36,10 @@ public class CityToWatch {
         this.cellsArea=3.18f;
         this.cellsEfficiency=19.3f;
         this.diffuseEfficiency=40;
-        this.converterPowerLimit=600;
-        this.converterEfficiency=95;
+        this.inverterPowerLimit =600;
+        this.inverterEfficiency =95;
         this.azimuthAngle=170;
-        this.elevationAngle=90;
+        this.tiltAngle =90;
 
     }
 
@@ -103,16 +103,16 @@ public class CityToWatch {
         return diffuseEfficiency;
     }
 
-    public float getConverterEfficiency() {
-        return converterEfficiency;
+    public float getInverterEfficiency() {
+        return inverterEfficiency;
     }
 
-    public float getConverterPowerLimit() {
-        return converterPowerLimit;
+    public float getInverterPowerLimit() {
+        return inverterPowerLimit;
     }
 
-    public float getElevationAngle() {
-        return elevationAngle;
+    public float getTiltAngle() {
+        return tiltAngle;
     }
 
     public void setCellsMaxPower(float cellsMaxPower) {
@@ -131,19 +131,19 @@ public class CityToWatch {
         this.cellsEfficiency = cellsEfficiency;
     }
 
-    public void setConverterEfficiency(float converterEfficiency) {
-        this.converterEfficiency = converterEfficiency;
+    public void setInverterEfficiency(float inverterEfficiency) {
+        this.inverterEfficiency = inverterEfficiency;
     }
 
-    public void setConverterPowerLimit(float converterPowerLimit) {
-        this.converterPowerLimit = converterPowerLimit;
+    public void setInverterPowerLimit(float inverterPowerLimit) {
+        this.inverterPowerLimit = inverterPowerLimit;
     }
 
     public void setDiffuseEfficiency(float diffuseEfficiency) {
         this.diffuseEfficiency = diffuseEfficiency;
     }
 
-    public void setElevationAngle(float elevationAngle) {
-        this.elevationAngle = elevationAngle;
+    public void setTiltAngle(float tiltAngle) {
+        this.tiltAngle = tiltAngle;
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/org/woheller69/weather/database/SQLiteHelper.java b/app/src/main/java/org/woheller69/weather/database/SQLiteHelper.java
index 840612d..6e2f712 100644
--- a/app/src/main/java/org/woheller69/weather/database/SQLiteHelper.java
+++ b/app/src/main/java/org/woheller69/weather/database/SQLiteHelper.java
@@ -47,10 +47,10 @@ public class SQLiteHelper extends SQLiteOpenHelper {
     private static final String CITIES_TO_WATCH_CELLS_AREA = "cells_area";
     private static final String CITIES_TO_WATCH_CELLS_EFFICIENCY = "cells_efficiency";
     private static final String CITIES_TO_WATCH_DIFFUSE_EFFICIENCY = "diffuse_efficiency";
-    private static final String CITIES_TO_WATCH_CONVERTER_POWER_LIMIT = "converter_power_limit";
-    private static final String CITIES_TO_WATCH_CONVERTER_EFFICIENCY = "converter_efficiency";
+    private static final String CITIES_TO_WATCH_INVERTER_POWER_LIMIT = "inverter_power_limit";
+    private static final String CITIES_TO_WATCH_INVERTER_EFFICIENCY = "inverter_efficiency";
     private static final String CITIES_TO_WATCH_AZIMUTH_ANGLE = "azimuth_angle";
-    private static final String CITIES_TO_WATCH_ELEVATION_ANGLE = "elevation_angle";
+    private static final String CITIES_TO_WATCH_TILT_ANGLE = "tilt_angle";
 
     //Names of columns in TABLE_FORECAST
     private static final String FORECAST_ID = "forecast_id";
@@ -128,10 +128,10 @@ public class SQLiteHelper extends SQLiteOpenHelper {
             CITIES_TO_WATCH_CELLS_AREA + " REAL NOT NULL," +
             CITIES_TO_WATCH_CELLS_EFFICIENCY + " REAL NOT NULL," +
             CITIES_TO_WATCH_DIFFUSE_EFFICIENCY + " REAL NOT NULL," +
-            CITIES_TO_WATCH_CONVERTER_POWER_LIMIT + " REAL NOT NULL," +
-            CITIES_TO_WATCH_CONVERTER_EFFICIENCY + " REAL NOT NULL," +
+            CITIES_TO_WATCH_INVERTER_POWER_LIMIT + " REAL NOT NULL," +
+            CITIES_TO_WATCH_INVERTER_EFFICIENCY + " REAL NOT NULL," +
             CITIES_TO_WATCH_AZIMUTH_ANGLE + " REAL NOT NULL," +
-            CITIES_TO_WATCH_ELEVATION_ANGLE + " REAL NOT NULL)";
+            CITIES_TO_WATCH_TILT_ANGLE + " REAL NOT NULL)";
 
     public static SQLiteHelper getInstance(Context context) {
         if (instance == null && context != null) {
@@ -175,10 +175,10 @@ public class SQLiteHelper extends SQLiteOpenHelper {
         values.put(CITIES_TO_WATCH_CELLS_AREA,city.getCellsArea());
         values.put(CITIES_TO_WATCH_CELLS_EFFICIENCY,city.getCellsEfficiency());
         values.put(CITIES_TO_WATCH_DIFFUSE_EFFICIENCY,city.getDiffuseEfficiency());
-        values.put(CITIES_TO_WATCH_CONVERTER_POWER_LIMIT,city.getConverterPowerLimit());
-        values.put(CITIES_TO_WATCH_CONVERTER_EFFICIENCY,city.getConverterEfficiency());
+        values.put(CITIES_TO_WATCH_INVERTER_POWER_LIMIT,city.getInverterPowerLimit());
+        values.put(CITIES_TO_WATCH_INVERTER_EFFICIENCY,city.getInverterEfficiency());
         values.put(CITIES_TO_WATCH_AZIMUTH_ANGLE,city.getAzimuthAngle());
-        values.put(CITIES_TO_WATCH_ELEVATION_ANGLE,city.getElevationAngle());
+        values.put(CITIES_TO_WATCH_TILT_ANGLE,city.getTiltAngle());
 
         long id=database.insert(TABLE_CITIES_TO_WATCH, null, values);
 
@@ -206,10 +206,10 @@ public class SQLiteHelper extends SQLiteOpenHelper {
                         ", " + CITIES_TO_WATCH_CELLS_AREA +
                         ", " + CITIES_TO_WATCH_CELLS_EFFICIENCY +
                         ", " + CITIES_TO_WATCH_DIFFUSE_EFFICIENCY +
-                        ", " + CITIES_TO_WATCH_CONVERTER_POWER_LIMIT +
-                        ", " + CITIES_TO_WATCH_CONVERTER_EFFICIENCY +
+                        ", " + CITIES_TO_WATCH_INVERTER_POWER_LIMIT +
+                        ", " + CITIES_TO_WATCH_INVERTER_EFFICIENCY +
                         ", " + CITIES_TO_WATCH_AZIMUTH_ANGLE +
-                        ", " + CITIES_TO_WATCH_ELEVATION_ANGLE +
+                        ", " + CITIES_TO_WATCH_TILT_ANGLE +
                         ", " + CITIES_TO_WATCH_COLUMN_RANK +
                         " FROM " + TABLE_CITIES_TO_WATCH +
                         " WHERE " + CITIES_TO_WATCH_CITY_ID + " = ?", arguments);
@@ -226,10 +226,10 @@ public class SQLiteHelper extends SQLiteOpenHelper {
             cityToWatch.setCellsArea(Float.parseFloat(cursor.getString(6)));
             cityToWatch.setCellsEfficiency(Float.parseFloat(cursor.getString(7)));
             cityToWatch.setDiffuseEfficiency(Float.parseFloat(cursor.getString(8)));
-            cityToWatch.setConverterPowerLimit(Float.parseFloat(cursor.getString(9)));
-            cityToWatch.setConverterEfficiency(Float.parseFloat(cursor.getString(10)));
+            cityToWatch.setInverterPowerLimit(Float.parseFloat(cursor.getString(9)));
+            cityToWatch.setInverterEfficiency(Float.parseFloat(cursor.getString(10)));
             cityToWatch.setAzimuthAngle(Float.parseFloat(cursor.getString(11)));
-            cityToWatch.setElevationAngle(Float.parseFloat(cursor.getString(12)));
+            cityToWatch.setTiltAngle(Float.parseFloat(cursor.getString(12)));
             cityToWatch.setRank(Integer.parseInt(cursor.getString(13)));
 
             cursor.close();
@@ -255,10 +255,10 @@ public class SQLiteHelper extends SQLiteOpenHelper {
                         ", " + CITIES_TO_WATCH_CELLS_AREA +
                         ", " + CITIES_TO_WATCH_CELLS_EFFICIENCY +
                         ", " + CITIES_TO_WATCH_DIFFUSE_EFFICIENCY +
-                        ", " + CITIES_TO_WATCH_CONVERTER_POWER_LIMIT +
-                        ", " + CITIES_TO_WATCH_CONVERTER_EFFICIENCY +
+                        ", " + CITIES_TO_WATCH_INVERTER_POWER_LIMIT +
+                        ", " + CITIES_TO_WATCH_INVERTER_EFFICIENCY +
                         ", " + CITIES_TO_WATCH_AZIMUTH_ANGLE +
-                        ", " + CITIES_TO_WATCH_ELEVATION_ANGLE +
+                        ", " + CITIES_TO_WATCH_TILT_ANGLE +
                         ", " + CITIES_TO_WATCH_COLUMN_RANK +
                         " FROM " + TABLE_CITIES_TO_WATCH
                 , new String[]{});
@@ -277,10 +277,10 @@ public class SQLiteHelper extends SQLiteOpenHelper {
                 cityToWatch.setCellsArea(Float.parseFloat(cursor.getString(6)));
                 cityToWatch.setCellsEfficiency(Float.parseFloat(cursor.getString(7)));
                 cityToWatch.setDiffuseEfficiency(Float.parseFloat(cursor.getString(8)));
-                cityToWatch.setConverterPowerLimit(Float.parseFloat(cursor.getString(9)));
-                cityToWatch.setConverterEfficiency(Float.parseFloat(cursor.getString(10)));
+                cityToWatch.setInverterPowerLimit(Float.parseFloat(cursor.getString(9)));
+                cityToWatch.setInverterEfficiency(Float.parseFloat(cursor.getString(10)));
                 cityToWatch.setAzimuthAngle(Float.parseFloat(cursor.getString(11)));
-                cityToWatch.setElevationAngle(Float.parseFloat(cursor.getString(12)));
+                cityToWatch.setTiltAngle(Float.parseFloat(cursor.getString(12)));
                 cityToWatch.setRank(Integer.parseInt(cursor.getString(13)));
 
                 cityToWatchList.add(cityToWatch);
@@ -305,10 +305,10 @@ public class SQLiteHelper extends SQLiteOpenHelper {
         values.put(CITIES_TO_WATCH_CELLS_AREA,cityToWatch.getCellsArea());
         values.put(CITIES_TO_WATCH_CELLS_EFFICIENCY,cityToWatch.getCellsEfficiency());
         values.put(CITIES_TO_WATCH_DIFFUSE_EFFICIENCY,cityToWatch.getDiffuseEfficiency());
-        values.put(CITIES_TO_WATCH_CONVERTER_POWER_LIMIT,cityToWatch.getConverterPowerLimit());
-        values.put(CITIES_TO_WATCH_CONVERTER_EFFICIENCY,cityToWatch.getConverterEfficiency());
+        values.put(CITIES_TO_WATCH_INVERTER_POWER_LIMIT,cityToWatch.getInverterPowerLimit());
+        values.put(CITIES_TO_WATCH_INVERTER_EFFICIENCY,cityToWatch.getInverterEfficiency());
         values.put(CITIES_TO_WATCH_AZIMUTH_ANGLE,cityToWatch.getAzimuthAngle());
-        values.put(CITIES_TO_WATCH_ELEVATION_ANGLE,cityToWatch.getElevationAngle());
+        values.put(CITIES_TO_WATCH_TILT_ANGLE,cityToWatch.getTiltAngle());
 
         database.update(TABLE_CITIES_TO_WATCH, values, CITIES_TO_WATCH_ID + " = ?",
                 new String[]{String.valueOf(cityToWatch.getId())});
diff --git a/app/src/main/java/org/woheller69/weather/preferences/AppPreferencesManager.java b/app/src/main/java/org/woheller69/weather/preferences/AppPreferencesManager.java
index a5f290a..6a7be00 100644
--- a/app/src/main/java/org/woheller69/weather/preferences/AppPreferencesManager.java
+++ b/app/src/main/java/org/woheller69/weather/preferences/AppPreferencesManager.java
@@ -40,105 +40,6 @@ public class AppPreferencesManager {
         return result;
     }
 
-    /**
-     * This method converts a given temperature value into the unit that was set in the preferences.
-     *
-     * @param temperature The temperature to convert into the unit that is set in the preferences.
-     *                    Make sure to pass a value in celsius.
-     * @return Returns the converted temperature.
-     **
-     */
-    public float convertTemperatureFromCelsius(float temperature) {
-        // 1 = Celsius (fallback), 2 = Fahrenheit
-        int prefValue = Integer.parseInt(preferences.getString("temperatureUnit", "1"));
-        if (prefValue == 1) {
-            return temperature;
-        } else {
-            return (((temperature * 9) / 5) + 32);
-        }
-    }
-
-    /**
-     * This method converts a given distance value into the unit that was set in the preferences.
-     *
-     * @param kilometers The kilometers to convert into the unit that is set in the preferences.
-     *                   Make sure to pass a value in kilometers.
-     * @return Returns the converted distance.
-     */
-    public float convertDistanceFromKilometers(float kilometers) {
-        // 1 = kilometers, 2 = miles
-        int prefValue = Integer.parseInt(preferences.getString("distanceUnit", "1"));
-        if (prefValue == 1) {
-            return kilometers;
-        } else {
-            return convertKmInMiles(kilometers);
-        }
-    }
-
-    /**
-     * @return Returns true if kilometers was set as distance unit in the preferences else false.
-     */
-    public boolean isDistanceUnitKilometers() {
-        int prefValue = Integer.parseInt(preferences.getString("distanceUnit", "0"));
-        return (prefValue == 1);
-    }
-
-    /**
-     * @return Returns true if miles was set as distance unit in the preferences else false.
-     */
-    public boolean isDistanceUnitMiles() {
-        int prefValue = Integer.parseInt(preferences.getString("distanceUnit", "0"));
-        return (prefValue == 2);
-    }
-
-    /**
-     * Converts a kilometer value in miles.
-     *
-     * @param km The value to convert to miles.
-     * @return Returns the converted value.
-     */
-    public float convertKmInMiles(float km) {
-        // TODO: Is this the right class for the function???
-        return (float) (km / 1.609344);
-    }
-
-    /**
-     * Converts a miles value in kilometers.
-     *
-     * @param miles The value to convert to kilometers.
-     * @return Returns the converted value.
-     */
-    public float convertMilesInKm(float miles) {
-        // TODO: Is this the right class for the function???
-        return (float) (miles * 1.609344);
-    }
-
-    /**
-     * @return Returns "°C" in case Celsius is set and "°F" if Fahrenheit was selected.
-     */
-    public String getTemperatureUnit() {
-        int prefValue = Integer.parseInt(preferences.getString("temperatureUnit", "1"));
-        if (prefValue == 1) {
-            return "°C";
-        } else {
-            return "°F";
-        }
-    }
-
-    /**
-     * @return Returns "km" in case kilometer is set and "mi" if miles was selected.
-     * @param applicationContext
-     */
-    public String getDistanceUnit(Context applicationContext) {
-        int prefValue = Integer.parseInt(preferences.getString("distanceUnit", "1"));
-        if (prefValue == 1) {
-            return applicationContext.getString(R.string.units_km);
-        } else {
-            return "mi";
-        }
-    }
-
-
     public boolean showStarDialog(Context context) {
         int versionCode = preferences.getInt("versionCode",BuildConfig.VERSION_CODE);
         boolean askForStar=preferences.getBoolean("askForStar",true);
diff --git a/app/src/main/java/org/woheller69/weather/ui/RecycleList/ItemViewHolder.java b/app/src/main/java/org/woheller69/weather/ui/RecycleList/ItemViewHolder.java
index 338cc39..c92586d 100644
--- a/app/src/main/java/org/woheller69/weather/ui/RecycleList/ItemViewHolder.java
+++ b/app/src/main/java/org/woheller69/weather/ui/RecycleList/ItemViewHolder.java
@@ -18,14 +18,14 @@ public class ItemViewHolder extends RecyclerView.ViewHolder {
      * Member variables
      */
     public TextView cityName;
-    public TextView elevationAngle;
+    public TextView tiltAngle;
     public TextView azimuthAngle;
     public TextView cellsMaxPower;
     public TextView cellsArea;
     public TextView cellsEfficiency;
     public TextView diffuseEfficiency;
-    public TextView converterPowerLimit;
-    public TextView converterEfficiency;
+    public TextView inverterPowerLimit;
+    public TextView inverterEfficiency;
 
 
     /**
@@ -36,14 +36,14 @@ public class ItemViewHolder extends RecyclerView.ViewHolder {
     public ItemViewHolder(View itemView) {
         super(itemView);
         this.cityName = (TextView) itemView.findViewById(R.id.city_overview_list_item_text);
-        this.elevationAngle = (TextView) itemView.findViewById(R.id.city_elevation_angle);
+        this.tiltAngle = (TextView) itemView.findViewById(R.id.city_tilt_angle);
         this.azimuthAngle = (TextView)  itemView.findViewById(R.id.city_azimuth_angle);
         this.cellsMaxPower = (TextView) itemView.findViewById(R.id.city_cells_max_power);
         this.cellsArea = (TextView) itemView.findViewById(R.id.city_cells_area);
         this.cellsEfficiency = (TextView) itemView.findViewById(R.id.city_cells_efficiency);
         this.diffuseEfficiency = (TextView) itemView.findViewById(R.id.city_diffuse_efficiency);
-        this.converterPowerLimit = (TextView) itemView.findViewById(R.id.city_converter_power_limit);
-        this.converterEfficiency = (TextView) itemView.findViewById(R.id.city_converter_efficiency);
+        this.inverterPowerLimit = (TextView) itemView.findViewById(R.id.city_inverter_power_limit);
+        this.inverterEfficiency = (TextView) itemView.findViewById(R.id.city_inverter_efficiency);
 
     }
 
diff --git a/app/src/main/java/org/woheller69/weather/ui/RecycleList/RecyclerOverviewListAdapter.java b/app/src/main/java/org/woheller69/weather/ui/RecycleList/RecyclerOverviewListAdapter.java
index 3d83370..d80f82b 100644
--- a/app/src/main/java/org/woheller69/weather/ui/RecycleList/RecyclerOverviewListAdapter.java
+++ b/app/src/main/java/org/woheller69/weather/ui/RecycleList/RecyclerOverviewListAdapter.java
@@ -2,15 +2,11 @@ package org.woheller69.weather.ui.RecycleList;
 
 import android.content.Context;
 
-import androidx.appcompat.app.AlertDialog;
 import androidx.recyclerview.widget.RecyclerView;
 
-import android.util.Log;
-import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.EditText;
 
 import org.woheller69.weather.R;
 import org.woheller69.weather.database.CityToWatch;
@@ -64,13 +60,13 @@ public class RecyclerOverviewListAdapter extends RecyclerView.Adapter<ItemViewHo
     public void onBindViewHolder(ItemViewHolder holder, int position) {
         holder.cityName.setText(cities.get(position).getCityName());
         holder.azimuthAngle.setText(context.getString(R.string.edit_location_hint_azimuth) +": "+ cities.get(position).getAzimuthAngle());
-        holder.elevationAngle.setText(context.getString(R.string.edit_location_hint_elevation) +": "+ cities.get(position).getElevationAngle());
+        holder.tiltAngle.setText(context.getString(R.string.edit_location_hint_tilt) +": "+ cities.get(position).getTiltAngle());
         holder.cellsMaxPower.setText(context.getString(R.string.edit_location_hint_cells_max_power) +": "+ cities.get(position).getCellsMaxPower());
         holder.cellsEfficiency.setText(context.getString(R.string.edit_location_hint_cells_efficiency) +": "+ cities.get(position).getCellsEfficiency());
         holder.cellsArea.setText(context.getString(R.string.edit_location_hint_cells_area) +": "+ cities.get(position).getCellsArea());
         holder.diffuseEfficiency.setText(context.getString(R.string.edit_location_hint_diffuse_efficiency) +": "+ cities.get(position).getDiffuseEfficiency());
-        holder.converterPowerLimit.setText(context.getString(R.string.edit_location_hint_converter_power_limit) +": "+ cities.get(position).getConverterPowerLimit());
-        holder.converterEfficiency.setText(context.getString(R.string.edit_location_hint_converter_efficiency) +": "+ cities.get(position).getConverterEfficiency());
+        holder.inverterPowerLimit.setText(context.getString(R.string.edit_location_hint_inverter_power_limit) +": "+ cities.get(position).getInverterPowerLimit());
+        holder.inverterEfficiency.setText(context.getString(R.string.edit_location_hint_inverter_efficiency) +": "+ cities.get(position).getInverterEfficiency());
 
     }
 
@@ -118,18 +114,18 @@ public class RecyclerOverviewListAdapter extends RecyclerView.Adapter<ItemViewHo
     public CityToWatch getCitytoWatch(int position){
         return cities.get(position);
     }
-    public void updateCity(CityToWatch cityToWatch, String cityName, float latitude, float longitude, float azimuth, float elevation, float cellsMaxPower, float cellsArea, float cellsEfficiency, float diffuseEfficiency, float converterPowerLimit, float converterEfficiency) {
+    public void updateCity(CityToWatch cityToWatch, String cityName, float latitude, float longitude, float azimuth, float tilt, float cellsMaxPower, float cellsArea, float cellsEfficiency, float diffuseEfficiency, float inverterPowerLimit, float inverterEfficiency) {
         cityToWatch.setCityName(cityName);
         cityToWatch.setLatitude(latitude);
         cityToWatch.setLongitude(longitude);
         cityToWatch.setAzimuthAngle(azimuth);
-        cityToWatch.setElevationAngle(elevation);
+        cityToWatch.setTiltAngle(tilt);
         cityToWatch.setCellsMaxPower(cellsMaxPower);
         cityToWatch.setCellsArea(cellsArea);
         cityToWatch.setCellsEfficiency(cellsEfficiency);
         cityToWatch.setDiffuseEfficiency(diffuseEfficiency);
-        cityToWatch.setConverterPowerLimit(converterPowerLimit);
-        cityToWatch.setConverterEfficiency(converterEfficiency);
+        cityToWatch.setInverterPowerLimit(inverterPowerLimit);
+        cityToWatch.setInverterEfficiency(inverterEfficiency);
         database.updateCityToWatch(cityToWatch);
         notifyDataSetChanged();
     }
diff --git a/app/src/main/java/org/woheller69/weather/weather_api/open_meteo/OMDataExtractor.java b/app/src/main/java/org/woheller69/weather/weather_api/open_meteo/OMDataExtractor.java
index f5d4dc6..ccea2e3 100644
--- a/app/src/main/java/org/woheller69/weather/weather_api/open_meteo/OMDataExtractor.java
+++ b/app/src/main/java/org/woheller69/weather/weather_api/open_meteo/OMDataExtractor.java
@@ -10,7 +10,6 @@ import org.json.JSONException;
 import org.json.JSONObject;
 import org.woheller69.weather.SolarPowerPlant;
 import org.woheller69.weather.database.CityToWatch;
-import org.woheller69.weather.database.GeneralData;
 import org.woheller69.weather.database.HourlyForecast;
 import org.woheller69.weather.database.SQLiteHelper;
 import org.woheller69.weather.database.WeekForecast;
@@ -78,7 +77,7 @@ public class OMDataExtractor implements IDataExtractor {
 
             SQLiteHelper dbhelper = SQLiteHelper.getInstance(context);
             CityToWatch city = dbhelper.getCityToWatch(cityID);
-            SolarPowerPlant spp = new SolarPowerPlant(city.getLatitude(), city.getLongitude(), city.getCellsMaxPower(), city.getCellsArea(), city.getCellsEfficiency(),city.getDiffuseEfficiency(), city.getConverterPowerLimit(), city.getConverterEfficiency(), city.getAzimuthAngle(), city.getElevationAngle());
+            SolarPowerPlant spp = new SolarPowerPlant(city.getLatitude(), city.getLongitude(), city.getCellsMaxPower(), city.getCellsArea(), city.getCellsEfficiency(),city.getDiffuseEfficiency(), city.getInverterPowerLimit(), city.getInverterEfficiency(), city.getAzimuthAngle(), city.getTiltAngle());
 
 
             IApiToDatabaseConversion conversion = new OMToDatabaseConversion();
diff --git a/app/src/main/res/layout/dialog_edit_location.xml b/app/src/main/res/layout/dialog_edit_location.xml
index 1c92fcc..cece05c 100644
--- a/app/src/main/res/layout/dialog_edit_location.xml
+++ b/app/src/main/res/layout/dialog_edit_location.xml
@@ -54,13 +54,13 @@
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:hint="@string/edit_location_hint_elevation"/>
+        android:hint="@string/edit_location_hint_tilt"/>
     <androidx.appcompat.widget.AppCompatEditText
-        android:id="@+id/EditLocation_Elevation"
+        android:id="@+id/EditLocation_Tilt"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:inputType="numberDecimal|numberSigned"
-        android:hint="@string/edit_location_hint_elevation"/>
+        android:hint="@string/edit_location_hint_tilt"/>
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
@@ -104,22 +104,22 @@
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:hint="@string/edit_location_hint_converter_power_limit"/>
+        android:hint="@string/edit_location_hint_inverter_power_limit"/>
     <androidx.appcompat.widget.AppCompatEditText
-        android:id="@+id/EditLocation_Converter_Power_Limit"
+        android:id="@+id/EditLocation_Inverter_Power_Limit"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:inputType="numberDecimal|numberSigned"
-        android:hint="@string/edit_location_hint_converter_power_limit"/>
+        android:hint="@string/edit_location_hint_inverter_power_limit"/>
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:hint="@string/edit_location_hint_converter_efficiency"/>
+        android:hint="@string/edit_location_hint_inverter_efficiency"/>
     <androidx.appcompat.widget.AppCompatEditText
-        android:id="@+id/EditLocation_Converter_Efficiency"
+        android:id="@+id/EditLocation_Inverter_Efficiency"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:inputType="numberDecimal|numberSigned"
-        android:hint="@string/edit_location_hint_converter_efficiency"/>
+        android:hint="@string/edit_location_hint_inverter_efficiency"/>
 </LinearLayout>
 </ScrollView>
\ No newline at end of file
diff --git a/app/src/main/res/layout/list_item_city_list.xml b/app/src/main/res/layout/list_item_city_list.xml
index 108c490..ead72e8 100644
--- a/app/src/main/res/layout/list_item_city_list.xml
+++ b/app/src/main/res/layout/list_item_city_list.xml
@@ -54,11 +54,11 @@
                 tools:visibility="visible" />
 
             <TextView
-                android:id="@+id/city_elevation_angle"
+                android:id="@+id/city_tilt_angle"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_gravity="center"
-                android:text="@string/edit_location_hint_elevation"
+                android:text="@string/edit_location_hint_tilt"
                 android:textAppearance="@style/TextAppearance.AppCompat.Medium"
                 tools:visibility="visible" />
 
@@ -100,20 +100,20 @@
                 tools:visibility="visible" />
 
             <TextView
-                android:id="@+id/city_converter_power_limit"
+                android:id="@+id/city_inverter_power_limit"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_gravity="center"
-                android:text="@string/edit_location_hint_converter_power_limit"
+                android:text="@string/edit_location_hint_inverter_power_limit"
                 android:textAppearance="@style/TextAppearance.AppCompat.Medium"
                 tools:visibility="visible" />
 
             <TextView
-                android:id="@+id/city_converter_efficiency"
+                android:id="@+id/city_inverter_efficiency"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_gravity="center"
-                android:text="@string/edit_location_hint_converter_efficiency"
+                android:text="@string/edit_location_hint_inverter_efficiency"
                 android:textAppearance="@style/TextAppearance.AppCompat.Medium"
                 tools:visibility="visible" />
 
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index ebbaf47..94a1fad 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -117,13 +117,13 @@
     <string name="edit_location_hint_latitude">Breitengrad [°]</string>
     <string name="edit_location_hint_longitude">Längengrad [°]</string>
     <string name="edit_location_hint_azimuth">Azimuth [°]</string>
-    <string name="edit_location_hint_elevation">Neigung [°]</string>
+    <string name="edit_location_hint_tilt">Neigung [°]</string>
     <string name="edit_location_hint_cells_max_power">Maximalleistung Zelle [W]</string>
     <string name="edit_location_hint_cells_efficiency">Wirkungsgrad Zelle [%]</string>
     <string name="edit_location_hint_cells_area">Fläche Zelle [m\u00b2]</string>
     <string name="edit_location_hint_diffuse_efficiency">Effizienz diffuse Strahlung [%]</string>
-    <string name="edit_location_hint_converter_power_limit">Leistung Wechselrichter [W]</string>
-    <string name="edit_location_hint_converter_efficiency">Effizienz Wechselrichter [%]</string>
+    <string name="edit_location_hint_inverter_power_limit">Leistung Wechselrichter [W]</string>
+    <string name="edit_location_hint_inverter_efficiency">Effizienz Wechselrichter [%]</string>
     <string name="units_Wh">Wh</string>
     <string name="edit_location_title">Ort bearbeiten</string>
 
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 7b4ba0c..4732a7d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -119,13 +119,13 @@
     <string name="edit_location_hint_latitude">Latitude [°]</string>
     <string name="edit_location_hint_longitude">Longitude [°]</string>
     <string name="edit_location_hint_azimuth">Azimuth [°]</string>
-    <string name="edit_location_hint_elevation">Elevation [°]</string>
+    <string name="edit_location_hint_tilt">Tilt [°]</string>
     <string name="edit_location_hint_cells_max_power">Cells max power [W]</string>
     <string name="edit_location_hint_cells_efficiency">Cells efficiency [%]</string>
     <string name="edit_location_hint_cells_area">Cell area [m\u00b2]</string>
     <string name="edit_location_hint_diffuse_efficiency">Diffuse radiation efficiency [%]</string>
-    <string name="edit_location_hint_converter_power_limit">Converter power [W]</string>
-    <string name="edit_location_hint_converter_efficiency">Converter efficiency [%]</string>
+    <string name="edit_location_hint_inverter_power_limit">Inverter power [W]</string>
+    <string name="edit_location_hint_inverter_efficiency">Inverter efficiency [%]</string>
     <string name="units_Wh">Wh</string>
     <string name="edit_location_title">Edit location</string>
 </resources>
diff --git a/fastlane/metadata/android/en-US/images/phoneScreenshots/03.png b/fastlane/metadata/android/en-US/images/phoneScreenshots/03.png
index 57f7bc7..0ef9add 100644
Binary files a/fastlane/metadata/android/en-US/images/phoneScreenshots/03.png and b/fastlane/metadata/android/en-US/images/phoneScreenshots/03.png differ