undef

s1a-iw-grd-vv-20200406t071354-20200406t071419-032003-03b25d-001_filter

s1a-iw-grd-vh-20200406t071354-20200406t071419-032003-03b25d-002_filter

s1a-iw-grd-vv-20200406t071354-20200406t071419-032003-03b25d-001_winddir

s1a-iw-grd-vh-20200406t071354-20200406t071419-032003-03b25d-002_winddir