undef

s1a-iw-grd-hv-20141106t060056-20141106t060125-003157-003a18-002_filter

s1a-iw-grd-hh-20141106t060056-20141106t060125-003157-003a18-001_filter

s1a-iw-grd-hv-20141106t060056-20141106t060125-003157-003a18-002_winddir

s1a-iw-grd-hh-20141106t060056-20141106t060125-003157-003a18-001_winddir