condition	mean	min	max
4 h after light	6.17088	6.08609	6.26179
8 h after light	6.426256666666666	6.21209	6.5889999999999995
12 h after light	6.38302	6.244680000000001	6.49709
4 h after dark	6.54718	6.23789	7.00852
8 h after dark	6.585369999999999	6.560389999999999	6.60818
12 h after dark	6.404673333333333	6.36077	6.43565