condition	mean	min	max
4 h after light	8.899305	8.67041	9.1282
8 h after light	12.055250000000001	10.8362	13.2743
12 h after light	15.67285	14.4388	16.9069
4 h after dark	19.1655	19.0959	19.2351
8 h after dark	14.2787	13.2056	15.3518
12 h after dark	14.07515	13.183	14.9673