condition mean min max 0 h after light 6.190975 6.12099 6.26096 4 h after light 4.286665 3.34679 5.22654 8 h after light 9.155280000000001 8.90723 9.40333 4 h after dark 8.573945 8.44569 8.7022 8 h after dark 7.0484849999999994 6.66774 7.42923 12 h after dark 5.630945 5.08468 6.17721