condition	mean	min	max
4 h after light	9.435215	8.63423	10.2362
8 h after light	8.15349	6.84173	9.46525
12 h after light	13.73645	13.431	14.0419
4 h after dark	16.778733333333335	14.6828	20.0319
8 h after dark	17.4786	16.3894	18.7327
12 h after dark	11.9689	10.7823	13.7355