RED = 1000-700mb 2840m Thickness Contour CYAN = 850-700mb 1540m Thickness Contour YELLOW = 1000-850mb 1300m Thickness Contour MAGENTA = 700-500mb 2560m Thickness Contour GREEN = 850-500mb 4100m Thickness Contour WHITE = 1000-500mb 5400m Thickness Contour   BLUE = 850mb 0 degree Isotherm