condition	mean	min	max
4 h after light	7.370540000000001	7.172000000000001	7.4832600000000005
8 h after light	7.588730000000001	7.246980000000001	7.8396300000000005
12 h after light	7.867866666666666	7.819369999999999	7.91402
4 h after dark	7.95307	7.85694	8.05781
8 h after dark	7.930793333333333	7.825489999999999	8.06448
12 h after dark	7.8194566666666665	7.6687199999999995	8.04797