undef

s1a-iw-grd-hh-20140622t172714-20140622t172739-001166-00124e-001_filter

s1a-iw-grd-hv-20140622t172714-20140622t172739-001166-00124e-002_filter

s1a-iw-grd-hh-20140622t172714-20140622t172739-001166-00124e-001_winddir

s1a-iw-grd-hv-20140622t172714-20140622t172739-001166-00124e-002_winddir