undef
s1b-ew-grd-vh-20210929t220406-20210929t220436-028919-037380-002_filter
s1b-ew-grd-vv-20210929t220406-20210929t220436-028919-037380-001_filter
s1b-ew-grd-vv-20210929t220406-20210929t220436-028919-037380-001_winddir
s1b-ew-grd-vh-20210929t220406-20210929t220436-028919-037380-002_winddir