undef

s1b-ew-grd-hv-20170620t160305-20170620t160409-006136-00ac78-002_filter

s1b-ew-grd-hh-20170620t160305-20170620t160409-006136-00ac78-001_filter

s1b-ew-grd-hv-20170620t160305-20170620t160409-006136-00ac78-002_winddir

s1b-ew-grd-hh-20170620t160305-20170620t160409-006136-00ac78-001_winddir