proj4.defs("EPSG:3703","+proj=tmerc +lat_0=40.5 +lon_0=-107.333333333333 +k=0.9999375 +x_0=400000 +y_0=100000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");