condition	mean	min	max
4 h after light	20.6688	19.9886	21.349
8 h after light	17.04735	16.6077	17.487
12 h after light	11.2039	11.0912	11.3166
4 h after dark	15.9575	15.1556	16.7594
8 h after dark	18.48005	18.4739	18.4862
12 h after dark	20.139	19.6288	20.6492