undef

s1a-ew-grd-vv-20190207t020939-20190207t021051-025817-02df33-001_filter

s1a-ew-grd-vh-20190207t020939-20190207t021051-025817-02df33-002_filter

s1a-ew-grd-vh-20190207t020939-20190207t021051-025817-02df33-002_winddir

s1a-ew-grd-vv-20190207t020939-20190207t021051-025817-02df33-001_winddir