undef

s1a-iw-grd-vv-20200827t001048-20200827t001113-034085-03f518-001_filter

s1a-iw-grd-vh-20200827t001048-20200827t001113-034085-03f518-002_filter

s1a-iw-grd-vv-20200827t001048-20200827t001113-034085-03f518-001_winddir

s1a-iw-grd-vh-20200827t001048-20200827t001113-034085-03f518-002_winddir