undef

s1b-ew-grd-vh-20190428t122525-20190428t122602-016006-01e172-002_filter

s1b-ew-grd-vv-20190428t122525-20190428t122602-016006-01e172-001_filter

s1b-ew-grd-vv-20190428t122525-20190428t122602-016006-01e172-001_winddir

s1b-ew-grd-vh-20190428t122525-20190428t122602-016006-01e172-002_winddir