undef

s1a-iw-grd-vh-20190914t231151-20190914t231216-029024-034af8-002_filter

s1a-iw-grd-vv-20190914t231151-20190914t231216-029024-034af8-001_filter

s1a-iw-grd-vv-20190914t231151-20190914t231216-029024-034af8-001_winddir

s1a-iw-grd-vh-20190914t231151-20190914t231216-029024-034af8-002_winddir