another safety check, to not crash even with PROJ4 not working
another safety check, to not crash even with PROJ4 not working

nakijun/vtp,nakijun/vtp,nakijun/vtp,nakijun/vtp,nakijun/vtp,markraz/vtp,seanisom/vtp,markraz/vtp,markraz/vtp,seanisom/vtp,markraz/vtp,seanisom/vtp,seanisom/vtp,markraz/vtp,seanisom/vtp