condition	mean	min	max
4 h after light	8.984313333333334	8.878860000000001	9.10041
8 h after light	9.10224	9.0448	9.16342
12 h after light	9.27606	9.246039999999999	9.32456
4 h after dark	9.019443333333333	8.926689999999999	9.07494
8 h after dark	8.589690000000001	8.24815	8.96774
12 h after dark	8.564073333333333	8.33445	8.78252