condition	mean	min	max
4 h after light	18.334035	17.904697	18.763373
8 h after light	17.9444305	15.490984	20.397877
12 h after light	15.6309455	14.577886	16.684005
4 h after dark	15.032440000000001	14.629163	15.435717
8 h after dark	16.7865525	15.148296	18.424809
12 h after dark	20.132664	20.132664	20.132664