condition mean min max 4 h after light 7.439075 2.95905 11.9191 8 h after light 4.29793 3.76393 4.83193 12 h after light 4.17814 3.89812 4.45816 4 h after dark 4.73849 4.56745 5.04495 8 h after dark 6.3588233333333335 5.89989 6.67398 12 h after dark 7.81808 6.76745 8.75868