condition	mean	min	max
4 h after light	15.9525	14.1601	17.7449
8 h after light	13.8385	13.8046	13.8724
12 h after light	15.25905	15.0745	15.4436
4 h after dark	19.2129	18.7045	19.6922
8 h after dark	20.353633333333335	19.7578	20.7421
12 h after dark	17.834933333333332	15.6762	19.9986