undef

s1a-ew-grd-vv-20191011t205334-20191011t205434-029416-03587a-001_filter

s1a-ew-grd-vh-20191011t205334-20191011t205434-029416-03587a-002_filter

s1a-ew-grd-vv-20191011t205334-20191011t205434-029416-03587a-001_winddir

s1a-ew-grd-vh-20191011t205334-20191011t205434-029416-03587a-002_winddir