undef

s1b-ew-grd-vh-20190426t233222-20190426t233327-015984-01e0b1-002_filter

s1b-ew-grd-vv-20190426t233222-20190426t233327-015984-01e0b1-001_filter

s1b-ew-grd-vh-20190426t233222-20190426t233327-015984-01e0b1-002_winddir

s1b-ew-grd-vv-20190426t233222-20190426t233327-015984-01e0b1-001_winddir