undef

s1b-ew-grd-vh-20180810t165710-20180810t165822-012203-0167b7-002_filter

s1b-ew-grd-vv-20180810t165710-20180810t165822-012203-0167b7-001_filter

s1b-ew-grd-vv-20180810t165710-20180810t165822-012203-0167b7-001_winddir

s1b-ew-grd-vh-20180810t165710-20180810t165822-012203-0167b7-002_winddir