proj4.defs("EPSG:6248","+proj=col_urban +lat_0=7.07888714166667 +lon_0=-73.1973432222222 +x_0=1097241.305 +y_0=1274642.278 +h_0=931 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");