undef

s1a-ew-grd-vv-20181007t023405-20181007t023510-024024-029ff5-001_filter

s1a-ew-grd-vh-20181007t023405-20181007t023510-024024-029ff5-002_filter

s1a-ew-grd-vh-20181007t023405-20181007t023510-024024-029ff5-002_winddir

s1a-ew-grd-vv-20181007t023405-20181007t023510-024024-029ff5-001_winddir