condition	mean	min	max
4 h after light	9.348375	8.23285	10.4639
8 h after light	6.400835	6.25061	6.55106
12 h after light	8.67458	8.26237	9.08679
4 h after dark	11.991299999999999	11.8702	12.1124
8 h after dark	9.917905000000001	9.52851	10.3073
12 h after dark	8.782905	8.07289	9.49292