undef

s1a-iw-grd-vh-20190505t100105-20190505t100130-027091-030d82-002_filter

s1a-iw-grd-vv-20190505t100105-20190505t100130-027091-030d82-001_filter

s1a-iw-grd-vh-20190505t100105-20190505t100130-027091-030d82-002_winddir

s1a-iw-grd-vv-20190505t100105-20190505t100130-027091-030d82-001_winddir