condition	mean	min	max
4 h after light	8.918916666666666	8.74225	9.01478
8 h after light	9.333966666666667	9.20422	9.56653
12 h after light	9.033919999999998	8.9111	9.193769999999999
4 h after dark	9.263306666666667	9.20466	9.38016
8 h after dark	9.219583333333334	9.02215	9.36382
12 h after dark	9.143949999999998	9.07439	9.252939999999999