condition	mean	min	max
4 h after light	8.46636	8.35495	8.65094
8 h after light	8.18306	8.10875	8.254769999999999
12 h after light	8.345366666666667	8.151069999999999	8.4625
4 h after dark	8.79445	8.6565	8.95865
8 h after dark	8.99162	8.961689999999999	9.01552
12 h after dark	9.211233333333334	9.18132	9.268930000000001