condition	mean	min	max
4 h after light	9.286263333333332	9.19866	9.372069999999999
8 h after light	9.051343333333334	8.918330000000001	9.26873
12 h after light	9.102686666666667	8.91953	9.21216
4 h after dark	9.46227	9.274289999999999	9.737630000000001
8 h after dark	9.350713333333333	9.1577	9.57843
12 h after dark	9.371830000000001	9.22509	9.486360000000001