undef

s1b-ew-grd-hv-20170619t102642-20170619t102742-006118-00abf5-002_filter

s1b-ew-grd-hh-20170619t102642-20170619t102742-006118-00abf5-001_filter

s1b-ew-grd-hv-20170619t102642-20170619t102742-006118-00abf5-002_winddir

s1b-ew-grd-hh-20170619t102642-20170619t102742-006118-00abf5-001_winddir