condition	mean	min	max
4 h after light	9.221359999999999	9.15577	9.287339999999999
8 h after light	9.11417	9.014339999999999	9.24966
12 h after light	8.967673333333332	8.86657	9.14435
4 h after dark	8.88043	8.82761	8.93769
8 h after dark	8.798276666666666	8.66029	8.92075
12 h after dark	8.78466	8.70614	8.82985