INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values (10551, 'EPSG', 10551, '+vunits=m +no_defs +type=crs', 'VERT_CS["DKMSL depth ",VERT_DATUM["Denmark Mean Sea Level ",2005,AUTHORITY["EPSG","1376"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Depth",DOWN],AUTHORITY["EPSG","10551"]]');