condition	mean	min	max
4 h after light	7.862783333333334	7.6814	7.961360000000001
8 h after light	9.121343333333334	9.00273	9.33535
12 h after light	8.425136666666667	8.22253	8.52661
4 h after dark	7.9425	7.70259	8.0847
8 h after dark	7.820209999999999	7.52388	8.06171
12 h after dark	7.091876666666666	6.942069999999999	7.19994