undef

s1b-ew-grd-vh-20181004t093407-20181004t093511-013001-018034-002_filter

s1b-ew-grd-vv-20181004t093407-20181004t093511-013001-018034-001_filter

s1b-ew-grd-vh-20181004t093407-20181004t093511-013001-018034-002_winddir

s1b-ew-grd-vv-20181004t093407-20181004t093511-013001-018034-001_winddir