condition mean min max 0 h after light 15.9936 13.9679 18.0193 2 h after light 10.90789 9.30918 12.5066 4 h after light 10.217975 8.88265 11.5533 8 h after light 9.013615 8.90724 9.11999 12 h after light 12.35515 11.0722 13.6381 2 h after dark 15.358699999999999 15.212 15.5054 4 h after dark 14.39265 13.5297 15.2556 8 h after dark 19.5474 18.9696 20.1252 12 h after dark 17.9048 16.0189 19.7907