°C-Symbol:
byte customCharDegC[8] = {0b01000, 0b10100, 0b01000, 0b00011, 0b00100, 0b00100, 0b00011, 0b00000};

Sonne:
byte customCharSun[8] = {0b00100, 0b10001, 0b01110, 0b11111, 0b11111, 0b01110, 0b10001, 0b00100};

Mond:
byte customCharMoon[8] = {0b11000, 0b01110, 0b00110, 0b00111, 0b00111, 0b00110, 0b01110, 0b11000};

Pfeil rechts:
byte customCharArrowRight[8] = {0b00000, 0b00100, 0b00110, 0b11111, 0b11111, 0b00110, 0b00100, 0b00000};