undef

s1b-ew-grd-hv-20170807t092936-20170807t093036-006832-00c067-002_filter

s1b-ew-grd-hh-20170807t092936-20170807t093036-006832-00c067-001_filter

s1b-ew-grd-hh-20170807t092936-20170807t093036-006832-00c067-001_winddir

s1b-ew-grd-hv-20170807t092936-20170807t093036-006832-00c067-002_winddir