undef

s1b-ew-grd-vh-20180728t210708-20180728t210808-012016-0161f6-002_filter

s1b-ew-grd-vv-20180728t210708-20180728t210808-012016-0161f6-001_filter

s1b-ew-grd-vv-20180728t210708-20180728t210808-012016-0161f6-001_winddir

s1b-ew-grd-vh-20180728t210708-20180728t210808-012016-0161f6-002_winddir