condition	mean	min	max
4 h after light	6.42227	5.58609	7.25845
8 h after light	2.39378	2.30912	2.47844
12 h after light	2.7018899999999997	2.69794	2.70584
4 h after dark	8.540055	7.93517	9.14494
8 h after dark	18.0512	17.5983	18.5041
12 h after dark	11.12525	10.5597	11.6908