condition mean min max 0 h after light 11.12815 10.6695 11.5868 4 h after light 7.689030000000001 7.29864 8.07942 8 h after light 7.75184 7.70014 7.80354 4 h after dark 8.565735 8.42426 8.70721 8 h after dark 8.83511 8.06878 9.60144 12 h after dark 9.609210000000001 8.80382 10.4146