undef

s1a-ew-grd-vh-20160902t082858-20160902t083002-012871-014532-002_filter

s1a-ew-grd-vv-20160902t082858-20160902t083002-012871-014532-001_filter

s1a-ew-grd-vv-20160902t082858-20160902t083002-012871-014532-001_winddir

s1a-ew-grd-vh-20160902t082858-20160902t083002-012871-014532-002_winddir