condition	mean	min	max
4 h after light	6.788236666666667	6.71555	6.84928
8 h after light	6.9279399999999995	6.690869999999999	7.07348
12 h after light	6.875346666666666	6.846480000000001	6.91097
4 h after dark	7.246029999999999	7.090439999999999	7.36365
8 h after dark	7.149150000000001	6.894830000000001	7.32892
12 h after dark	7.252363333333333	6.990889999999999	7.554239999999999