condition	mean	min	max
4 h after light	9.272283333333334	9.092030000000001	9.47947
8 h after light	9.008716666666666	8.95152	9.11486
12 h after light	9.10854	9.056560000000001	9.158999999999999
4 h after dark	9.12032	8.9592	9.291789999999999
8 h after dark	9.06899	9.03432	9.12086
12 h after dark	8.872766666666667	8.68951	9.07891