condition	mean	min	max
4 h after light	9.141363333333333	9.08532	9.21204
8 h after light	9.152833333333334	9.087639999999999	9.27534
12 h after light	9.33084	9.25468	9.468539999999999
4 h after dark	9.53153	9.33809	9.687610000000001
8 h after dark	9.568583333333333	9.34792	9.7918
12 h after dark	9.64391	9.48022	9.74742