undef

s1a-ew-grd-vv-20190912t150021-20190912t150126-028989-0349c5-001_filter

s1a-ew-grd-vh-20190912t150021-20190912t150126-028989-0349c5-002_filter

s1a-ew-grd-vv-20190912t150021-20190912t150126-028989-0349c5-001_winddir

s1a-ew-grd-vh-20190912t150021-20190912t150126-028989-0349c5-002_winddir