proj4.defs("EPSG:8353","+proj=krovak +lat_0=49.5 +lon_0=24.8333333333333 +alpha=30.2881397527778 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +towgs84=485.021,169.465,483.839,-7.786342,-4.397554,-4.102655,0 +units=m +no_defs +type=crs");