undef

s1b-iw-grd-vv-20191012t084028-20191012t084057-018440-022bd1-001_filter

s1b-iw-grd-vh-20191012t084028-20191012t084057-018440-022bd1-002_filter

s1b-iw-grd-vv-20191012t084028-20191012t084057-018440-022bd1-001_winddir

s1b-iw-grd-vh-20191012t084028-20191012t084057-018440-022bd1-002_winddir