undef

s1b-iw-grd-vv-20160930t225839-20160930t225903-002305-003e59-001_filter

s1b-iw-grd-vh-20160930t225839-20160930t225903-002305-003e59-002_filter

s1b-iw-grd-vv-20160930t225839-20160930t225903-002305-003e59-001_winddir

s1b-iw-grd-vh-20160930t225839-20160930t225903-002305-003e59-002_winddir