proj4.defs("EPSG:2170","+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9999 +x_0=500000 +y_0=0 +ellps=bessel +towgs84=427.914,105.528,510.908,-4.992523,-5.898813,10.306673,12.431493 +units=m +no_defs +type=crs");