condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 5.38555 0.0 10.7711 4 h after light 2.63487 0.0 5.26974 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 3.02339 0.0 6.04678 12 h after dark 12.932244999999998 8.27849 17.586