undef

s1b-ew-grd-vh-20190906t141207-20190906t141249-017918-021b95-002_filter

s1b-ew-grd-vv-20190906t141207-20190906t141249-017918-021b95-001_filter

s1b-ew-grd-vv-20190906t141207-20190906t141249-017918-021b95-001_winddir

s1b-ew-grd-vh-20190906t141207-20190906t141249-017918-021b95-002_winddir