undef

s1a-ew-grd-vh-20181005t100110-20181005t100210-023999-029f41-002_filter

s1a-ew-grd-vv-20181005t100110-20181005t100210-023999-029f41-001_filter

s1a-ew-grd-vv-20181005t100110-20181005t100210-023999-029f41-001_winddir

s1a-ew-grd-vh-20181005t100110-20181005t100210-023999-029f41-002_winddir