undef
s1b-ew-grd-vh-20180106t021846-20180106t021946-009044-010298-002_filter
s1b-ew-grd-vv-20180106t021846-20180106t021946-009044-010298-001_filter
s1b-ew-grd-vh-20180106t021846-20180106t021946-009044-010298-002_winddir
s1b-ew-grd-vv-20180106t021846-20180106t021946-009044-010298-001_winddir