condition	mean	min	max
4 h after light	19.6367	19.5102	19.7632
8 h after light	15.422049999999999	14.806	16.0381
12 h after light	18.90805	18.5509	19.2652
4 h after dark	20.01005	19.9053	20.1148
8 h after dark	20.60725	20.5776	20.6369
12 h after dark	20.9341	19.7434	22.1248