condition	mean	min	max
4 h after light	14.594940000000001	8.83402	17.8793
8 h after light	11.74045	2.99575	20.7292
12 h after light	12.242659999999999	6.80288	16.9395
4 h after dark	15.492333333333335	13.2192	19.2891
8 h after dark	16.87408	9.79884	23.4078
12 h after dark	17.50583333333333	15.5392	19.1773