undef

s1a-iw-grd-vv-20190830t224638-20190830t224705-028805-03435d-001_filter

s1a-iw-grd-vh-20190830t224638-20190830t224705-028805-03435d-002_filter

s1a-iw-grd-vh-20190830t224638-20190830t224705-028805-03435d-002_winddir

s1a-iw-grd-vv-20190830t224638-20190830t224705-028805-03435d-001_winddir