undef
s1b-iw-grd-vv-20191110t223610-20191110t223635-018871-023975-001_filter
s1b-iw-grd-vh-20191110t223610-20191110t223635-018871-023975-002_filter
s1b-iw-grd-vv-20191110t223610-20191110t223635-018871-023975-001_winddir
s1b-iw-grd-vh-20191110t223610-20191110t223635-018871-023975-002_winddir