undef

s1b-ew-grd-vv-20181222t002340-20181222t002440-014147-01a498-001_filter

s1b-ew-grd-vh-20181222t002340-20181222t002440-014147-01a498-002_filter

s1b-ew-grd-vv-20181222t002340-20181222t002440-014147-01a498-001_winddir

s1b-ew-grd-vh-20181222t002340-20181222t002440-014147-01a498-002_winddir