condition mean min max 4 h after light 3249.1549999999997 3121.79 3376.52 8 h after light 2541.875 2514.36 2569.39 12 h after light 2079.21 1914.33 2244.09 4 h after dark 1677.8049999999998 1509.01 1846.6 8 h after dark 2680.24 2676.23 2684.25 12 h after dark 3130.3500000000004 3113.13 3147.57