condition	mean	min	max
4 h after light	8.30085	8.13396	8.47485
8 h after light	8.412036666666667	8.15269	8.59008
12 h after light	8.341566666666667	8.192160000000001	8.48115
4 h after dark	8.47312	8.14457	8.771239999999999
8 h after dark	8.36915	8.20739	8.4864
12 h after dark	8.158573333333333	8.00355	8.29758