condition	mean	min	max
4 h after light	7.68115	7.54962	7.88353
8 h after light	7.583076666666667	7.33435	7.927810000000001
12 h after light	7.459356666666666	7.31008	7.73389
4 h after dark	7.314923333333334	7.113230000000001	7.5532
8 h after dark	7.070130000000001	6.783360000000001	7.344530000000001
12 h after dark	7.079936666666667	6.939	7.16335