condition mean min max 0 h after light 1.1653799999999999 1.0286 1.30216 4 h after light 2.73964 2.72091 2.75837 8 h after light 3.12167 2.67384 3.5695 4 h after dark 2.563475 1.5299 3.59705 8 h after dark 2.202185 2.07431 2.33006 12 h after dark 1.093798 0.990886 1.19671