condition	mean	min	max
0 h after light	9.146149999999999	8.57034	9.72196
4 h after light	7.420885	6.76468	8.07709
8 h after light	7.072825	6.41477	7.73088
4 h after dark	10.397405	9.23761	11.5572
8 h after dark	12.28155	11.4198	13.1433
12 h after dark	12.3687	10.8244	13.913