condition	mean	min	max
4 h after light	8.19214	8.14765	8.237169999999999
8 h after light	8.29144	8.19594	8.36773
12 h after light	8.332536666666666	8.24508	8.48728
4 h after dark	8.39021	8.22603	8.531830000000001
8 h after dark	8.20856	8.1074	8.378919999999999
12 h after dark	8.288173333333333	8.14847	8.387780000000001