condition	mean	min	max
4 h after light	8.6484	8.5847	8.77079
8 h after light	8.904073333333333	8.77477	9.095460000000001
12 h after light	9.22534	9.168989999999999	9.32208
4 h after dark	9.27251	9.11127	9.4564
8 h after dark	9.113146666666667	9.100760000000001	9.12268
12 h after dark	8.708626666666667	8.490110000000001	8.9786