condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0941345 0.0 0.188269 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0943765 0.0 0.188753 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0