proj4.defs("EPSG:2170","+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9999 +x_0=500000 +y_0=0 +ellps=bessel +towgs84=551.7,162.9,467.9,6.04,1.96,-11.38,-4.82 +units=m +no_defs +type=crs");