undef

s1a-ew-grd-vv-20201225t144626-20201225t144726-035843-04324a-001_filter

s1a-ew-grd-vh-20201225t144626-20201225t144726-035843-04324a-002_filter

s1a-ew-grd-vh-20201225t144626-20201225t144726-035843-04324a-002_winddir

s1a-ew-grd-vv-20201225t144626-20201225t144726-035843-04324a-001_winddir