undef

s1a-ew-grd-vv-20180807t154302-20180807t154406-023142-028386-001_filter

s1a-ew-grd-vh-20180807t154302-20180807t154406-023142-028386-002_filter

s1a-ew-grd-vh-20180807t154302-20180807t154406-023142-028386-002_winddir

s1a-ew-grd-vv-20180807t154302-20180807t154406-023142-028386-001_winddir