undef

s1a-ew-grd-vh-20181005t100210-20181005t100311-023999-029f41-002_filter

s1a-ew-grd-vv-20181005t100210-20181005t100311-023999-029f41-001_filter

s1a-ew-grd-vh-20181005t100210-20181005t100311-023999-029f41-002_winddir

s1a-ew-grd-vv-20181005t100210-20181005t100311-023999-029f41-001_winddir