condition	mean	min	max
4 h after light	22.8874	22.8373	22.9375
8 h after light	15.98675	15.5499	16.4236
12 h after light	19.4681	19.3773	19.5589
4 h after dark	19.9097	19.5089	20.3105
8 h after dark	21.5193	19.8419	23.1967
12 h after dark	23.63035	23.4364	23.8243