condition	mean	min	max
4 h after light	8.172030000000001	7.5549800000000005	8.4807
8 h after light	8.523006666666667	8.201310000000001	8.87401
12 h after light	9.110596666666668	8.982560000000001	9.20162
4 h after dark	9.25388	8.845419999999999	9.45824
8 h after dark	9.45266	9.07887	9.73131
12 h after dark	9.148193333333333	9.0255	9.34832