undef

s1a-iw-grd-vh-20160224t101646-20160224t101715-010087-00edc8-002_filter

s1a-iw-grd-vv-20160224t101646-20160224t101715-010087-00edc8-001_filter

s1a-iw-grd-vh-20160224t101646-20160224t101715-010087-00edc8-002_winddir

s1a-iw-grd-vv-20160224t101646-20160224t101715-010087-00edc8-001_winddir