condition	mean	min	max
4 h after light	6.399606666666666	6.30121	6.5168099999999995
8 h after light	6.600623333333333	6.54695	6.643739999999999
12 h after light	6.49212	6.39067	6.56751
4 h after dark	6.718113333333333	6.656339999999999	6.79805
8 h after dark	6.50014	6.3933	6.6230899999999995
12 h after dark	6.40651	6.3478900000000005	6.50571