GEOGCS["GCS_Deutsches_Hauptdreiecksnetz",DATUM["D_Deutsches_Hauptdreiecksnetz",SPHEROID["Bessel_1841",6377397.155,299.1528128],EXTENSION["PROJ4_GRIDS","de_adv_BETA2007.tif"]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]