undef

s1a-ew-grd-vv-20181026t090105-20181026t090210-024305-02a914-001_filter

s1a-ew-grd-vh-20181026t090105-20181026t090210-024305-02a914-002_filter

s1a-ew-grd-vh-20181026t090105-20181026t090210-024305-02a914-002_winddir

s1a-ew-grd-vv-20181026t090105-20181026t090210-024305-02a914-001_winddir