undef

s1a-iw-grd-vv-20190912t232827-20190912t232852-028995-0349f2-001_filter

s1a-iw-grd-vh-20190912t232827-20190912t232852-028995-0349f2-002_filter

s1a-iw-grd-vh-20190912t232827-20190912t232852-028995-0349f2-002_winddir

s1a-iw-grd-vv-20190912t232827-20190912t232852-028995-0349f2-001_winddir