undef

s1b-iw-grd-vh-20191101t080409-20191101t080434-018731-0234e0-002_filter

s1b-iw-grd-vv-20191101t080409-20191101t080434-018731-0234e0-001_filter

s1b-iw-grd-vv-20191101t080409-20191101t080434-018731-0234e0-001_winddir

s1b-iw-grd-vh-20191101t080409-20191101t080434-018731-0234e0-002_winddir