undef

s1b-ew-grd-vh-20181006t095207-20181006t095311-013030-01811b-002_filter

s1b-ew-grd-vv-20181006t095207-20181006t095311-013030-01811b-001_filter

s1b-ew-grd-vv-20181006t095207-20181006t095311-013030-01811b-001_winddir

s1b-ew-grd-vh-20181006t095207-20181006t095311-013030-01811b-002_winddir