undef

s1a-iw-grd-vv-20200827t001023-20200827t001048-034085-03f518-001_filter

s1a-iw-grd-vh-20200827t001023-20200827t001048-034085-03f518-002_filter

s1a-iw-grd-vh-20200827t001023-20200827t001048-034085-03f518-002_winddir

s1a-iw-grd-vv-20200827t001023-20200827t001048-034085-03f518-001_winddir