undef

s1b-iw-grd-hv-20160922t174301-20160922t174326-002185-003aae-002_filter

s1b-iw-grd-hh-20160922t174301-20160922t174326-002185-003aae-001_filter

s1b-iw-grd-hh-20160922t174301-20160922t174326-002185-003aae-001_winddir

s1b-iw-grd-hv-20160922t174301-20160922t174326-002185-003aae-002_winddir