PROJCS["Corrego_Alegre_1961_UTM_Zone_21S",GEOGCS["GCS_Corrego_Alegre_1961",DATUM["D_Corrego_Alegre_1961",SPHEROID["International_1924",6378388.0,297.0],EXTENSION["PROJ4_GRIDS","CA61_003.gsb"]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",10000000.0],PARAMETER["Central_Meridian",-57.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]