undef

s1a-iw-grd-vh-20150713t100053-20150713t100118-006791-009211-002_filter

s1a-iw-grd-vv-20150713t100053-20150713t100118-006791-009211-001_filter

s1a-iw-grd-vv-20150713t100053-20150713t100118-006791-009211-001_winddir

s1a-iw-grd-vh-20150713t100053-20150713t100118-006791-009211-002_winddir