condition	mean	min	max
4 h after light	6.921817	6.683726	7.159908
8 h after light	7.8245795000000005	7.542013	8.107146
12 h after light	6.7967965	6.341401	7.252192
4 h after dark	7.932534	7.757922	8.107146
8 h after dark	7.290343	7.189965	7.390721
12 h after dark	7.367633	7.367633	7.367633