undef

s1a-ew-grd-vv-20181025t203134-20181025t203239-024297-02a8d5-001_filter

s1a-ew-grd-vh-20181025t203134-20181025t203239-024297-02a8d5-002_filter

s1a-ew-grd-vh-20181025t203134-20181025t203239-024297-02a8d5-002_winddir

s1a-ew-grd-vv-20181025t203134-20181025t203239-024297-02a8d5-001_winddir