undef
s1b-ew-grd-vh-20190331t005033-20190331t005133-015591-01d3a6-002_filter
s1b-ew-grd-vv-20190331t005033-20190331t005133-015591-01d3a6-001_filter
s1b-ew-grd-vv-20190331t005033-20190331t005133-015591-01d3a6-001_winddir
s1b-ew-grd-vh-20190331t005033-20190331t005133-015591-01d3a6-002_winddir