undef

s1a-ew-grd-vv-20180831t203902-20180831t204009-023495-028eda-001_filter

s1a-ew-grd-vh-20180831t203902-20180831t204009-023495-028eda-002_filter

s1a-ew-grd-vh-20180831t203902-20180831t204009-023495-028eda-002_winddir

s1a-ew-grd-vv-20180831t203902-20180831t204009-023495-028eda-001_winddir