condition	mean	min	max
4 h after light	8.297880000000001	7.76428	8.83148
8 h after light	5.58596	4.87864	6.29328
12 h after light	5.50587	5.19935	5.81239
4 h after dark	6.739373333333333	6.42186	7.14601
8 h after dark	7.805763333333333	7.45761	8.03156
12 h after dark	7.6669599999999996	7.40151	7.85697