condition mean min max 0 h after light 42.79305 41.3066 44.2795 4 h after light 26.77395 26.0698 27.4781 8 h after light 19.1574 17.9605 20.3543 4 h after dark 19.09915 16.6666 21.5317 8 h after dark 29.13995 28.3515 29.9284 12 h after dark 39.3954 36.8828 41.908