undef

s1b-ew-grd-vh-20180829t151005-20180829t151110-012479-01703d-002_filter

s1b-ew-grd-vv-20180829t151005-20180829t151110-012479-01703d-001_filter

s1b-ew-grd-vh-20180829t151005-20180829t151110-012479-01703d-002_winddir

s1b-ew-grd-vv-20180829t151005-20180829t151110-012479-01703d-001_winddir