undef

s1a-iw-grd-hv-20141106t184600-20141106t184619-003165-003a3c-002_filter

s1a-iw-grd-hh-20141106t184600-20141106t184619-003165-003a3c-001_filter

s1a-iw-grd-hh-20141106t184600-20141106t184619-003165-003a3c-001_winddir

s1a-iw-grd-hv-20141106t184600-20141106t184619-003165-003a3c-002_winddir