condition	mean	min	max
4 h after light	8.13979	8.033999999999999	8.26948
8 h after light	9.43485	9.303460000000001	9.50769
12 h after light	9.01525	8.80675	9.29547
4 h after dark	8.988493333333334	8.81944	9.28043
8 h after dark	8.625743333333334	8.430860000000001	8.77783
12 h after dark	8.333636666666667	8.26117	8.45735