undef

s1b-ew-grd-vh-20180202t131548-20180202t131637-009444-010faf-002_filter

s1b-ew-grd-vv-20180202t131548-20180202t131637-009444-010faf-001_filter

s1b-ew-grd-vh-20180202t131548-20180202t131637-009444-010faf-002_winddir

s1b-ew-grd-vv-20180202t131548-20180202t131637-009444-010faf-001_winddir