undef
s1b-ew-grd-vv-20190614t133351-20190614t133442-016693-01f6a9-001_filter
s1b-ew-grd-vh-20190614t133351-20190614t133442-016693-01f6a9-002_filter
s1b-ew-grd-vh-20190614t133351-20190614t133442-016693-01f6a9-002_winddir
s1b-ew-grd-vv-20190614t133351-20190614t133442-016693-01f6a9-001_winddir