condition	mean	min	max
4 h after light	7.95071	7.837110000000001	8.03763
8 h after light	8.921316666666668	8.6256	9.13904
12 h after light	8.5596	8.39517	8.7378
4 h after dark	8.48419	8.265830000000001	8.7648
8 h after dark	8.40609	8.21834	8.52415
12 h after dark	7.862456666666667	7.7278199999999995	7.978389999999999