condition	mean	min	max
4 h after light	6.396565000000001	5.71823	7.0749
8 h after light	8.80826	8.5795	9.03702
12 h after light	8.94186	8.8026	9.08112
4 h after dark	12.9327	11.2729	14.5925
8 h after dark	12.54535	11.4433	13.6474
12 h after dark	11.505700000000001	10.4827	12.5287