condition	mean	min	max
4 h after light	8.231405500000001	8.04521	8.417601
8 h after light	7.5862324999999995	7.221194	7.951271
12 h after light	7.7721785	7.742121	7.802236
4 h after dark	7.5273565	7.129794	7.924919
8 h after dark	8.125225	7.534302	8.716148
12 h after dark	8.948978	8.948978	8.948978