undef

s1b-ew-grd-vv-20180808t082357-20180808t082501-012169-016699-001_filter

s1b-ew-grd-vh-20180808t082357-20180808t082501-012169-016699-002_filter

s1b-ew-grd-vh-20180808t082357-20180808t082501-012169-016699-002_winddir

s1b-ew-grd-vv-20180808t082357-20180808t082501-012169-016699-001_winddir