condition	mean	min	max
4 h after light	6.671503333333334	6.31267	7.28856
8 h after light	6.578913333333333	6.0527	7.341
12 h after light	6.571793333333334	6.10648	7.21977
4 h after dark	6.81772	6.15077	7.658989999999999
8 h after dark	6.718093333333333	6.21911	7.52433
12 h after dark	6.756810000000001	6.2662	7.5324100000000005