condition	mean	min	max
4 h after light	8.518936666666667	8.15052	8.75222
8 h after light	8.384879999999999	7.897189999999999	8.736419999999999
12 h after light	8.708963333333333	8.38977	8.95865
4 h after dark	8.965209999999999	8.72079	9.146239999999999
8 h after dark	8.947866666666666	8.56217	9.21468
12 h after dark	8.912650000000001	8.43552	9.25132