undef

s1a-ew-grd-vh-20190209t015221-20190209t015325-025846-02e046-002_filter

s1a-ew-grd-vv-20190209t015221-20190209t015325-025846-02e046-001_filter

s1a-ew-grd-vh-20190209t015221-20190209t015325-025846-02e046-002_winddir

s1a-ew-grd-vv-20190209t015221-20190209t015325-025846-02e046-001_winddir