undef
s1a-ew-grd-vv-20181010t114907-20181010t115011-024073-02a192-001_filter
s1a-ew-grd-vh-20181010t114907-20181010t115011-024073-02a192-002_filter
s1a-ew-grd-vv-20181010t114907-20181010t115011-024073-02a192-001_winddir
s1a-ew-grd-vh-20181010t114907-20181010t115011-024073-02a192-002_winddir