condition	mean	min	max
0 h after light	6.4468250000000005	5.967	6.92665
4 h after light	5.977885000000001	5.25331	6.70246
8 h after light	4.0647850000000005	3.33857	4.791
4 h after dark	6.17305	5.34124	7.00486
8 h after dark	6.90028	6.82189	6.97867
12 h after dark	7.54025	7.365	7.7155