undef

s1a-ew-grd-hv-20151116t093106-20151116t093123-008628-00c411-002_filter

s1a-ew-grd-hh-20151116t093106-20151116t093123-008628-00c411-001_filter

s1a-ew-grd-hh-20151116t093106-20151116t093123-008628-00c411-001_winddir

s1a-ew-grd-hv-20151116t093106-20151116t093123-008628-00c411-002_winddir