undef

s1a-iw-grd-hh-20141109t173523-20141109t173542-003208-003b37-001_filter

s1a-iw-grd-hv-20141109t173523-20141109t173542-003208-003b37-002_filter

s1a-iw-grd-hv-20141109t173523-20141109t173542-003208-003b37-002_winddir

s1a-iw-grd-hh-20141109t173523-20141109t173542-003208-003b37-001_winddir