condition	mean	min	max
4 h after light	8.276793333333334	8.1527	8.39253
8 h after light	8.07794	7.88903	8.182360000000001
12 h after light	7.818273333333333	7.7270199999999996	7.96824
4 h after dark	8.165983333333333	8.11317	8.22143
8 h after dark	8.23094	8.139389999999999	8.38707
12 h after dark	8.2111	8.19117	8.22991