condition mean min max 4 h after light 1006.8 1006.8 1006.8 8 h after light 1662.65 1184.8 2140.5 12 h after light 2329.5 1828.5 2830.5 4 h after dark 1747.65 1359.4 2135.9 8 h after dark 1117.0 693.3 1540.7 12 h after dark 512.15 217.3 807.0