condition mean min max 4 h after light 63.73995 63.2535 64.2264 8 h after light 40.83495 39.4769 42.193 12 h after light 50.2149 49.6787 50.7511 4 h after dark 85.9299 85.8828 85.977 8 h after dark 106.3495 103.156 109.543 12 h after dark 96.96735 95.0162 98.9185