undef

s1a-ew-grd-vh-20180803t022503-20180803t022607-023076-02815f-002_filter

s1a-ew-grd-vv-20180803t022503-20180803t022607-023076-02815f-001_filter

s1a-ew-grd-vv-20180803t022503-20180803t022607-023076-02815f-001_winddir

s1a-ew-grd-vh-20180803t022503-20180803t022607-023076-02815f-002_winddir