condition	mean	min	max
4 h after light	6.65474	6.52904	6.787000000000001
8 h after light	6.852356666666667	6.73705	6.928030000000001
12 h after light	6.773983333333334	6.673780000000001	6.970089999999999
4 h after dark	6.6040366666666666	6.5269	6.695539999999999
8 h after dark	6.56235	6.48114	6.66718
12 h after dark	6.556266666666667	6.382569999999999	6.74805