condition	mean	min	max
4 h after light	8.529066666666667	8.46078	8.65485
8 h after light	8.287423333333333	8.24793	8.31899
12 h after light	8.16976	8.054780000000001	8.27556
4 h after dark	8.35479	8.2124	8.55975
8 h after dark	8.74083	8.67095	8.79936
12 h after dark	9.842713333333332	9.77608	9.934389999999999