condition	mean	min	max
4 h after light	15.4155865	12.854873	17.9763
8 h after light	14.2973095	13.951411	14.643208
12 h after light	12.8984345	11.653911	14.142958
4 h after dark	15.702451	12.821172	18.58373
8 h after dark	17.267599	16.426023	18.109175
12 h after dark	12.587033	12.587033	12.587033