undef

s1a-iw-grd-vv-20220215t021124-20220215t021149-041917-04fdbb-001_filter

s1a-iw-grd-vh-20220215t021124-20220215t021149-041917-04fdbb-002_filter

s1a-iw-grd-vv-20220215t021124-20220215t021149-041917-04fdbb-001_winddir

s1a-iw-grd-vh-20220215t021124-20220215t021149-041917-04fdbb-002_winddir