condition	mean	min	max
4 h after light	8.28505	8.12628	8.42567
8 h after light	8.218303333333333	7.91326	8.41853
12 h after light	8.198086666666667	8.06046	8.45411
4 h after dark	8.1768	7.97117	8.4225
8 h after dark	8.35665	8.16842	8.68534
12 h after dark	8.642983333333333	8.58911	8.69277