condition	mean	min	max
4 h after light	10.451205	9.73701	11.1654
8 h after light	13.33635	13.1287	13.544
12 h after light	15.5959	14.2719	16.9199
4 h after dark	19.705366666666666	19.1859	20.3872
8 h after dark	17.525533333333332	15.725	19.5475
12 h after dark	16.9449	15.7847	18.6259