condition mean min max 4 h after light 470.6 470.6 470.6 8 h after light 379.0 323.3 434.7 12 h after light 373.65 352.0 395.3 4 h after dark 684.2 375.1 993.3 8 h after dark 827.1 683.7 970.5 12 h after dark 685.45 640.6 730.3