proj4.defs("EPSG:6268","+proj=col_urban +lat_0=12.523794325 +lon_0=-81.72937595 +x_0=820439.298 +y_0=1877357.828 +h_0=6 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");