undef

s1a-ew-grd-vv-20190320t125056-20190320t125126-026421-02f50e-001_filter

s1a-ew-grd-vh-20190320t125056-20190320t125126-026421-02f50e-002_filter

s1a-ew-grd-vh-20190320t125056-20190320t125126-026421-02f50e-002_winddir

s1a-ew-grd-vv-20190320t125056-20190320t125126-026421-02f50e-001_winddir