undef

s1a-iw-grd-vv-20211026t164728-20211026t164753-040293-04c642-001_filter

s1a-iw-grd-vh-20211026t164728-20211026t164753-040293-04c642-002_filter

s1a-iw-grd-vv-20211026t164728-20211026t164753-040293-04c642-001_winddir

s1a-iw-grd-vh-20211026t164728-20211026t164753-040293-04c642-002_winddir