condition	mean	min	max
4 h after light	8.968276666666666	8.91497	9.05361
8 h after light	8.97424	8.89687	9.05518
12 h after light	9.233996666666668	9.152560000000001	9.30832
4 h after dark	9.105523333333334	9.05381	9.15344
8 h after dark	8.95225	8.81617	9.13065
12 h after dark	8.88657	8.806289999999999	8.92941