Android SQLite database contains only null values

I am trying to insert the values from an array in a SQLite database. The problem is that the function inserts only null values eventhough the array does not contain such values.

The function for insert :

public void addArrayEntry(String [] response){
    try {
        SQLiteDatabase db = this.getWritableDatabase();
        ContentValues values = new ContentValues();
        //System.out.println(response.length);
        for (int i=1; i<response.length; i++){
            values.put(temperature,response[i]);
            db.insert(tableStatistics,null,values);
        }

        db.close();
    }

    catch (Exception e){
        Log.e("Error in insert", e.toString());
    }

}

String createTable = "CREATE TABLE statistics ( " +
            "id INTEGER PRIMARY KEY AUTOINCREMENT, " +
            "temperature REAL, "+
            "light INTEGER, "+
            "humidity INTEGER)";

Array values :

05-08 14:24:21.405 10720-10720/org.security.andreiism.iotsecurity I/System.out﹕ 23.798828125 05-08 14:24:21.405 10720-10720/org.security.andreiism.iotsecurity I/System.out﹕ 744 05-08 14:24:21.405 10720-10720/org.security.andreiism.iotsecurity I/System.out﹕ 424