undef

s1a-ew-grd-vv-20190427t123429-20190427t123528-026975-03095b-001_filter

s1a-ew-grd-vh-20190427t123429-20190427t123528-026975-03095b-002_filter

s1a-ew-grd-vv-20190427t123429-20190427t123528-026975-03095b-001_winddir

s1a-ew-grd-vh-20190427t123429-20190427t123528-026975-03095b-002_winddir