undef

s1b-ew-grd-vh-20181003t053409-20181003t053513-012984-017fb4-002_filter

s1b-ew-grd-vv-20181003t053409-20181003t053513-012984-017fb4-001_filter

s1b-ew-grd-vh-20181003t053409-20181003t053513-012984-017fb4-002_winddir

s1b-ew-grd-vv-20181003t053409-20181003t053513-012984-017fb4-001_winddir