undef

s1b-ew-grd-vv-20190218t184650-20190218t184711-015004-01c08c-001_filter

s1b-ew-grd-vh-20190218t184650-20190218t184711-015004-01c08c-002_filter

s1b-ew-grd-vh-20190218t184650-20190218t184711-015004-01c08c-002_winddir

s1b-ew-grd-vv-20190218t184650-20190218t184711-015004-01c08c-001_winddir