undef

s1b-iw-grd-vv-20201008t000821-20201008t000846-023714-02d0fe-001_filter

s1b-iw-grd-vh-20201008t000821-20201008t000846-023714-02d0fe-002_filter

s1b-iw-grd-vv-20201008t000821-20201008t000846-023714-02d0fe-001_winddir

s1b-iw-grd-vh-20201008t000821-20201008t000846-023714-02d0fe-002_winddir