proj4.defs("EPSG:6270","+proj=col_urban +lat_0=11.2196430555556 +lon_0=-74.2250052777778 +x_0=983892.409 +y_0=1732533.518 +h_0=29 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");