undef

s1b-ew-grd-vh-20180120t020405-20180120t020505-009248-01093d-002_filter

s1b-ew-grd-vv-20180120t020405-20180120t020505-009248-01093d-001_filter

s1b-ew-grd-vh-20180120t020405-20180120t020505-009248-01093d-002_winddir

s1b-ew-grd-vv-20180120t020405-20180120t020505-009248-01093d-001_winddir