undef

s1b-ew-grd-hh-20170715t114841-20170715t114941-006498-00b6d5-001_filter

s1b-ew-grd-hv-20170715t114841-20170715t114941-006498-00b6d5-002_filter

s1b-ew-grd-hh-20170715t114841-20170715t114941-006498-00b6d5-001_winddir

s1b-ew-grd-hv-20170715t114841-20170715t114941-006498-00b6d5-002_winddir