condition	mean	min	max
4 h after light	8.88877	8.65519	9.25175
8 h after light	8.80666	8.671610000000001	9.013010000000001
12 h after light	8.73848	8.51414	9.04395
4 h after dark	9.15217	8.8369	9.33897
8 h after dark	9.11606	8.97279	9.360389999999999
12 h after dark	9.007003333333333	8.89833	9.21214