condition mean min max 0 h after light 3.602375 3.44033 3.76442 4 h after light 2.621015 2.21388 3.02815 8 h after light 2.150895 1.94959 2.3522 4 h after dark 4.617255 3.11338 6.12113 8 h after dark 5.06116 4.85379 5.26853 12 h after dark 3.00442 2.6452 3.36364