condition mean min max 0 h after light 0.355464 0.304373 0.406555 4 h after light 1.590646 0.700222 2.48107 8 h after light 0.863357 0.722944 1.00377 4 h after dark 0.648673 0.500191 0.797155 8 h after dark 1.0038645 0.899309 1.10842 12 h after dark 0.4460145 0.0 0.892029