condition mean min max 4 h after light 2715.8 2715.8 2715.8 8 h after light 2845.5 2342.5 3348.5 12 h after light 3680.65 2684.5 4676.8 4 h after dark 3548.2 3026.9 4069.5 8 h after dark 3124.6 2894.6 3354.6 12 h after dark 2213.8 1962.4 2465.2