undef

s1a-iw-grd-vh-20150602t215956-20150602t220021-006200-008158-002_filter

s1a-iw-grd-vv-20150602t215956-20150602t220021-006200-008158-001_filter

s1a-iw-grd-vv-20150602t215956-20150602t220021-006200-008158-001_winddir

s1a-iw-grd-vh-20150602t215956-20150602t220021-006200-008158-002_winddir