condition	mean	min	max
4 h after light	8.303813333333332	8.22614	8.42637
8 h after light	8.198103333333334	8.07695	8.31757
12 h after light	8.47395	8.23377	8.71981
4 h after dark	8.27206	8.2178	8.32112
8 h after dark	8.387223333333333	8.212	8.550839999999999
12 h after dark	8.3268	8.09732	8.50282