undef

s1a-ew-grd-vh-20190214t182852-20190214t182957-025929-02e348-002_filter

s1a-ew-grd-vv-20190214t182852-20190214t182957-025929-02e348-001_filter

s1a-ew-grd-vv-20190214t182852-20190214t182957-025929-02e348-001_winddir

s1a-ew-grd-vh-20190214t182852-20190214t182957-025929-02e348-002_winddir