condition	mean	min	max
4 h after light	15.428550000000001	13.783	17.0741
8 h after light	14.87905	13.5946	16.1635
12 h after light	17.9573	16.8547	19.0599
4 h after dark	19.72385	19.6417	19.806
8 h after dark	34.0109	33.6349	34.3869
12 h after dark	20.64075	20.6061	20.6754