condition	mean	min	max
4 h after light	9.14266	9.02695	9.20752
8 h after light	9.173350000000001	9.100430000000001	9.23268
12 h after light	9.190413333333334	9.11733	9.23016
4 h after dark	9.21752	9.02085	9.38638
8 h after dark	9.169716666666666	8.997119999999999	9.28091
12 h after dark	9.373056666666667	9.30194	9.44737