INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values (4903, 'EPSG', 4903, '+proj=longlat +a=6378298.3 +rf=294.73 +pm=-3.687375 +no_defs +type=crs', 'GEOGCS["Madrid 1870 (Madrid)",DATUM["Madrid_1870_Madrid",SPHEROID["Struve 1860",6378298.3,294.73,AUTHORITY["EPSG","7028"]],AUTHORITY["EPSG","6903"]],PRIMEM["Madrid",-3.687375,AUTHORITY["EPSG","8905"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4903"]]');