undef

s1a-iw-grd-vh-20170126t063005-20170126t063030-014999-0187ee-002_filter

s1a-iw-grd-vv-20170126t063005-20170126t063030-014999-0187ee-001_filter

s1a-iw-grd-vv-20170126t063005-20170126t063030-014999-0187ee-001_winddir

s1a-iw-grd-vh-20170126t063005-20170126t063030-014999-0187ee-002_winddir