condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.191774 0.0 0.385796 3 h after dark 0.0 0.0 0.0 6 h after dark 0.13618433333333332 0.0 0.408553 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0