undef

s1a-ew-grd-vv-20190706t030818-20190706t030900-027991-03292b-001_filter

s1a-ew-grd-vh-20190706t030818-20190706t030900-027991-03292b-002_filter

s1a-ew-grd-vv-20190706t030818-20190706t030900-027991-03292b-001_winddir

s1a-ew-grd-vh-20190706t030818-20190706t030900-027991-03292b-002_winddir