condition	mean	min	max
4 h after light	9.149610000000001	9.067060000000001	9.23545
8 h after light	9.09513	8.9134	9.29862
12 h after light	9.165396666666666	9.11314	9.216000000000001
4 h after dark	9.16233	9.04683	9.2561
8 h after dark	9.10901	9.01915	9.240689999999999
12 h after dark	9.421693333333334	9.35925	9.51764