condition	mean	min	max
4 h after light	15.10265	13.2243	16.981
8 h after light	19.9959	19.5587	20.4331
12 h after light	14.78615	13.0646	16.5077
4 h after dark	19.0402	18.2351	19.8453
8 h after dark	14.669799999999999	13.5644	15.7752
12 h after dark	17.595950000000002	16.835	18.3569