undef

s1b-ew-grd-hh-20170725t084835-20170725t084935-006642-00bae9-001_filter

s1b-ew-grd-hv-20170725t084835-20170725t084935-006642-00bae9-002_filter

s1b-ew-grd-hh-20170725t084835-20170725t084935-006642-00bae9-001_winddir

s1b-ew-grd-hv-20170725t084835-20170725t084935-006642-00bae9-002_winddir