undef

s1b-iw-grd-vv-20170326t174939-20170326t175004-004883-008874-001_filter

s1b-iw-grd-vh-20170326t174939-20170326t175004-004883-008874-002_filter

s1b-iw-grd-vv-20170326t174939-20170326t175004-004883-008874-001_winddir

s1b-iw-grd-vh-20170326t174939-20170326t175004-004883-008874-002_winddir