condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.17309066666666664 0.0 0.519272 8 h after dark 0.29193166666666664 0.0 0.875795 12 h after dark 0.0 0.0 0.0