undef

s1b-iw-grd-vh-20170824t062920-20170824t062945-007078-00c784-002_filter

s1b-iw-grd-vv-20170824t062920-20170824t062945-007078-00c784-001_filter

s1b-iw-grd-vv-20170824t062920-20170824t062945-007078-00c784-001_winddir

s1b-iw-grd-vh-20170824t062920-20170824t062945-007078-00c784-002_winddir