condition	mean	min	max
4 h after light	7.191190000000001	5.5103	8.87208
8 h after light	9.240704999999998	9.09968	9.38173
12 h after light	12.63345	12.6175	12.6494
4 h after dark	16.878766666666667	15.3353	18.6316
8 h after dark	12.622366666666666	11.686	13.9908
12 h after dark	8.72011	7.77729	9.29894