undef

s1a-ew-grd-hh-20150627t155052-20150627t155156-006561-008bb2-001_filter

s1a-ew-grd-hv-20150627t155052-20150627t155156-006561-008bb2-002_filter

s1a-ew-grd-hh-20150627t155052-20150627t155156-006561-008bb2-001_winddir

s1a-ew-grd-hv-20150627t155052-20150627t155156-006561-008bb2-002_winddir