condition mean min max 4 h after light 0.940868 0.905852 0.975884 8 h after light 1.3499599999999998 1.09309 1.60683 12 h after light 1.418545 1.30829 1.5288 4 h after dark 2.424505 2.09913 2.74988 8 h after dark 1.168095 1.14609 1.1901 12 h after dark 1.32687 1.17617 1.47757