undef

s1b-ew-grd-vh-20181008t235029-20181008t235133-013068-01824c-002_filter

s1b-ew-grd-vv-20181008t235029-20181008t235133-013068-01824c-001_filter

s1b-ew-grd-vh-20181008t235029-20181008t235133-013068-01824c-002_winddir

s1b-ew-grd-vv-20181008t235029-20181008t235133-013068-01824c-001_winddir