9457=COMPD_CS["GBK19 Grid + ODN height",PROJCS["GBK19 Grid",GEOGCS["GBK19-IRF",DATUM["GBK19_Intermediate_Reference_Frame",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1289"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","9453"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",55.75],PARAMETER["central_meridian",-4.35],PARAMETER["scale_factor",1],PARAMETER["false_easting",93720.394],PARAMETER["false_northing",113870.493],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","9456"]],VERT_CS["ODN height",VERT_DATUM["Ordnance Datum Newlyn",2005,AUTHORITY["EPSG","5101"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5701"]],AUTHORITY["EPSG","9457"]]