condition	mean	min	max
4 h after light	6.727186666666666	6.437	6.92892
8 h after light	6.1938200000000005	5.88476	6.509440000000001
12 h after light	6.001893333333333	5.85301	6.14577
4 h after dark	6.5162233333333335	5.95046	6.9276800000000005
8 h after dark	6.86463	6.76616	6.952439999999999
12 h after dark	7.69116	7.325069999999999	8.02233