undef
s1a-ew-grd-vv-20191022t201438-20191022t201542-029576-035df5-001_filter
s1a-ew-grd-vh-20191022t201438-20191022t201542-029576-035df5-002_filter
s1a-ew-grd-vv-20191022t201438-20191022t201542-029576-035df5-001_winddir
s1a-ew-grd-vh-20191022t201438-20191022t201542-029576-035df5-002_winddir