condition	mean	min	max
4 h after light	8.437503333333334	8.25458	8.57893
8 h after light	8.73413	8.702960000000001	8.77512
12 h after light	8.615943333333332	8.35797	8.75504
4 h after dark	8.894443333333333	8.49558	9.16431
8 h after dark	8.924850000000001	8.66665	9.14145
12 h after dark	9.238833333333334	9.16012	9.29771