undef

s1b-iw-grd-vv-20190314t215120-20190314t215150-015356-01cc08-001_filter

s1b-iw-grd-vh-20190314t215120-20190314t215150-015356-01cc08-002_filter

s1b-iw-grd-vv-20190314t215120-20190314t215150-015356-01cc08-001_winddir

s1b-iw-grd-vh-20190314t215120-20190314t215150-015356-01cc08-002_winddir