undef

s1a-iw-grd-vh-20161127t063009-20161127t063034-014124-016cc5-002_filter

s1a-iw-grd-vv-20161127t063009-20161127t063034-014124-016cc5-001_filter

s1a-iw-grd-vv-20161127t063009-20161127t063034-014124-016cc5-001_winddir

s1a-iw-grd-vh-20161127t063009-20161127t063034-014124-016cc5-002_winddir