undef

s1b-ew-grd-hh-20170614t083923-20170614t084028-006044-00a9cc-001_filter

s1b-ew-grd-hv-20170614t083923-20170614t084028-006044-00a9cc-002_filter

s1b-ew-grd-hv-20170614t083923-20170614t084028-006044-00a9cc-002_winddir

s1b-ew-grd-hh-20170614t083923-20170614t084028-006044-00a9cc-001_winddir