1 files changed, 38 insertions, 0 deletions
diff --git a/python/notes/version_4.md b/python/notes/version_4.md
index e7be1e6..c7fcf40 100644
--- a/python/notes/version_4.md
+++ b/python/notes/version_4.md
@@ -891,3 +891,41 @@ igyewr6er5epfozhk7dyfqa5tu      igyewr6er5epfozhk7dyfqa5tu      exact   doi
 Completed 24/25 jobs in 42h with a few failures from disk space issues.
 
 * 2562m34.844s
+
+----
+
+# Stats
+
+* BrefCombined
+
+```
+1,175,653,287 exact      doi
+  540,957,187 unmatched  unknown
+   62,621,153 strong     jaccardauthors
+   56,950,207 exact      pmid
+   11,942,348 strong     slugtitleauthormatch
+   10,278,122 strong     tokenizedauthors
+    3,419,958 exact      arxiv
+    2,479,491 exact      titleauthormatch
+      592,522 exact      isbn
+      462,252 strong     versioneddoi
+       91,076 strong     pmiddoipair
+       77,030 strong     customieeearxiv
+       57,290 strong     dataciterelatedid
+       33,837 strong     arxivversion
+       18,448 exact      pmcid
+        1,749 exact      workid
+        1,241 strong     figshareversion
+          557 strong     titleartifact
+           10 strong     custombsiundated
+            2 strong     custombsisubdoc
+```
+
+Of the 540M unmatched, we have:
+
+```
+          Unstr CSL
+
+404285013 true  false
+136672174 false true
+```