3991=PROJCS["Puerto Rico State Plane CS of 1927",GEOGCS["Puerto Rico",DATUM["Puerto_Rico",SPHEROID["Clarke 1866",6378206.4,294.978698213898],TOWGS84[11,72,-101,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4139"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",17.8333333333333],PARAMETER["central_meridian",-66.4333333333333],PARAMETER["standard_parallel_1",18.4333333333333],PARAMETER["standard_parallel_2",18.0333333333333],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["US survey foot",0.304800609601219],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","3991"]]