condition	mean	min	max
4 h after light	7.72506	7.7027600000000005	7.75563
8 h after light	7.708693333333334	7.645060000000001	7.7933699999999995
12 h after light	7.872166666666667	7.738289999999999	7.99395
4 h after dark	7.880983333333333	7.76323	8.09768
8 h after dark	7.684926666666667	7.6298699999999995	7.782260000000001
12 h after dark	7.65811	7.56657	7.72359