condition	mean	min	max
4 h after light	7.051886666666666	6.9285	7.296189999999999
8 h after light	7.05361	6.84013	7.25128
12 h after light	7.058843333333333	6.8673	7.27584
4 h after dark	7.12809	6.961760000000001	7.3629
8 h after dark	7.033110000000001	6.780410000000001	7.17272
12 h after dark	7.082299999999999	6.974989999999999	7.13762