condition	mean	min	max
4 h after light	8.57825	8.33699	8.70443
8 h after light	8.806786666666666	8.59197	8.93887
12 h after light	9.089383333333334	8.970189999999999	9.20198
4 h after dark	9.150923333333333	8.863010000000001	9.36714
8 h after dark	8.96473	8.79855	9.0529
12 h after dark	8.65436	8.53323	8.73528