undef

s1a-iw-grd-vh-20170205t175832-20170205t175857-015152-018c94-002_filter

s1a-iw-grd-vv-20170205t175832-20170205t175857-015152-018c94-001_filter

s1a-iw-grd-vh-20170205t175832-20170205t175857-015152-018c94-002_winddir

s1a-iw-grd-vv-20170205t175832-20170205t175857-015152-018c94-001_winddir