condition	mean	min	max
4 h after light	7.98899	7.835030000000001	8.17806
8 h after light	8.01217	7.9382399999999995	8.14937
12 h after light	8.328703333333333	8.186860000000001	8.46153
4 h after dark	8.48292	8.27846	8.76615
8 h after dark	8.43732	8.12749	8.69443
12 h after dark	8.366403333333333	8.14759	8.5843