undef

s1a-iw-grd-vh-20160612t063004-20160612t063029-011674-011dfe-002_filter

s1a-iw-grd-vv-20160612t063004-20160612t063029-011674-011dfe-001_filter

s1a-iw-grd-vh-20160612t063004-20160612t063029-011674-011dfe-002_winddir

s1a-iw-grd-vv-20160612t063004-20160612t063029-011674-011dfe-001_winddir