condition	mean	min	max
4 h after light	9.420773333333333	9.120410000000001	9.57105
8 h after light	9.43634	9.05978	9.6247
12 h after light	9.38534	9.14828	9.5502
4 h after dark	9.116246666666667	8.51028	9.55637
8 h after dark	9.074346666666665	8.487169999999999	9.54877
12 h after dark	8.86155	8.547	9.211219999999999