undef

s1a-ew-grd-vh-20190425t234054-20190425t234159-026953-03087c-002_filter

s1a-ew-grd-vv-20190425t234054-20190425t234159-026953-03087c-001_filter

s1a-ew-grd-vh-20190425t234054-20190425t234159-026953-03087c-002_winddir

s1a-ew-grd-vv-20190425t234054-20190425t234159-026953-03087c-001_winddir