undef

s1b-ew-grd-vh-20180308t012439-20180308t012539-009933-011fe5-002_filter

s1b-ew-grd-vv-20180308t012439-20180308t012539-009933-011fe5-001_filter

s1b-ew-grd-vh-20180308t012439-20180308t012539-009933-011fe5-002_winddir

s1b-ew-grd-vv-20180308t012439-20180308t012539-009933-011fe5-001_winddir