Refresh README from repo-side eval metrics

README.md

@@ -97,7 +97,7 @@ unfiltered results should be reported separately.
 | FLEURS | test | unfiltered | TBD | TBD | TBD | Standalone eval pending |
 | Zambezi | dev | filtered | TBD | TBD | TBD | Standalone eval pending |
 | Zambezi | dev | unfiltered | TBD | TBD | TBD | Standalone eval pending |
-| Zambezi | test | filtered | TBD | TBD | TBD | Standalone eval pending |
+| Zambezi | test | filtered | 427 | 0.6231 | 0.1545 | Filtered to 30 seconds |
 | Zambezi | test | unfiltered | 428 | 0.6203 | 0.1536 | No duration filter |
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