undef

s1b-ew-grd-vv-20180804t142907-20180804t143011-012114-0164eb-001_filter

s1b-ew-grd-vh-20180804t142907-20180804t143011-012114-0164eb-002_filter

s1b-ew-grd-vv-20180804t142907-20180804t143011-012114-0164eb-001_winddir

s1b-ew-grd-vh-20180804t142907-20180804t143011-012114-0164eb-002_winddir