undef
s1b-ew-grd-vv-20180830t034013-20180830t034113-012487-017077-001_filter
s1b-ew-grd-vh-20180830t034013-20180830t034113-012487-017077-002_filter
s1b-ew-grd-vv-20180830t034013-20180830t034113-012487-017077-001_winddir
s1b-ew-grd-vh-20180830t034013-20180830t034113-012487-017077-002_winddir