condition mean min max 4 h after light 1123.7 1123.7 1123.7 8 h after light 1167.45 940.6 1394.3 12 h after light 707.75 207.7 1207.8 4 h after dark 350.05 239.1 461.0 8 h after dark 535.75 486.3 585.2 12 h after dark 596.55 519.3 673.8