proj4.defs("EPSG:27217","+proj=tmerc +lat_0=-41.8108028611111 +lon_0=171.581260055556 +k=1 +x_0=300000 +y_0=700000 +ellps=intl +nadgrids=nzgd2kgrid0005.gsb +units=m +no_defs +type=crs");