condition mean min max 0 h after light 7.570155 7.40027 7.74004 2 h after light 4.25347 3.89995 4.60699 4 h after light 4.01811 3.40352 4.6327 8 h after light 5.81864 4.88976 6.74752 12 h after light 7.50192 7.39726 7.60658 2 h after dark 9.298865 9.02923 9.5685 4 h after dark 8.995975 8.05647 9.93548 8 h after dark 11.054400000000001 10.8483 11.2605 12 h after dark 8.48123 8.38919 8.57327