condition	mean	min	max
4 h after light	12.21875	10.8539	13.5836
8 h after light	8.31498	7.9975	8.63246
12 h after light	7.580695	7.39473	7.76666
4 h after dark	7.73179	6.72733	8.28142
8 h after dark	8.447346666666666	7.43202	9.46657
12 h after dark	9.49979	9.15971	9.83682