condition	mean	min	max
4 h after light	9.18119	9.16013	9.20688
8 h after light	9.03415	8.882719999999999	9.22537
12 h after light	9.080810000000001	9.012260000000001	9.11996
4 h after dark	9.516586666666667	9.44017	9.58083
8 h after dark	9.55401	9.48904	9.6283
12 h after dark	9.43412	9.4105	9.44638