undef

s1a-ew-grd-vh-20190216t072156-20190216t072256-025951-02e3ff-002_filter

s1a-ew-grd-vv-20190216t072156-20190216t072256-025951-02e3ff-001_filter

s1a-ew-grd-vh-20190216t072156-20190216t072256-025951-02e3ff-002_winddir

s1a-ew-grd-vv-20190216t072156-20190216t072256-025951-02e3ff-001_winddir