condition mean min max 4 h after light 871.7 871.7 871.7 8 h after light 1069.65 849.4 1289.9 12 h after light 715.4 54.2 1376.6 4 h after dark 878.1 56.5 1699.7 8 h after dark 828.0999999999999 498.6 1157.6 12 h after dark 434.05 432.5 435.6