INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values (3108, 'EPSG', 3108, '+proj=tmerc +lat_0=49.5 +lon_0=-2.41666666666667 +k=0.999997 +x_0=47000 +y_0=50000 +ellps=GRS80 +units=m +no_defs +type=crs', 'PROJCS["ETRS89 / Guernsey Grid",GEOGCS["ETRS89",DATUM["European_Terrestrial_Reference_System_1989",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6258"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4258"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",49.5],PARAMETER["central_meridian",-2.41666666666667],PARAMETER["scale_factor",0.999997],PARAMETER["false_easting",47000],PARAMETER["false_northing",50000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","3108"]]');