undef

s1a-iw-grd-vh-20200803t231401-20200803t231426-033749-03e964-002_filter

s1a-iw-grd-vv-20200803t231401-20200803t231426-033749-03e964-001_filter

s1a-iw-grd-vh-20200803t231401-20200803t231426-033749-03e964-002_winddir

s1a-iw-grd-vv-20200803t231401-20200803t231426-033749-03e964-001_winddir