condition	mean	min	max
4 h after light	6.17281	6.09929	6.29431
8 h after light	6.17409	6.136419999999999	6.21393
12 h after light	6.06576	5.9351	6.13469
4 h after dark	6.182416666666667	6.1064	6.2552900000000005
8 h after dark	5.953373333333333	5.68315	6.21361
12 h after dark	6.1218	5.96609	6.20094