results don't add up convincingly yet

README.md

@@ -21,7 +21,7 @@ node build/src/dfs.js mcf-out.csv mcf-dfs.csv
 node ./build/src/analyse-sarafu-challenge-solution.js ./debt.csv ./dfs.csv
 node ./build/src/analyse-sarafu-challenge-solution.js ./debt.csv ./mcf-dfs.csv
 ```
-You'll see MCF+BEW nets 49% of debt and DFS by itself only nets 43% of debt, so it's underperforming by 15%.
+You'll see MCF+BEW nets ??% of debt and DFS by itself only nets ??% of debt, so it's underperforming by ??%.
 
 ### Input data
 The Sarafu Netting Challenge uses the transaction data from the [Sarafu Community Inclusion Currency, 2020-2021](https://www.nature.com/articles/s41597-022-01539-4) which is available for download free of charge from [UK Data Service](https://beta.ukdataservice.ac.uk/datacatalogue/studies/study?id=855142). To obtain the dataset you may be able to use your existing academic credentials, or you may need to create an account and wait a few days for it to be activated. The download will contain a folder named `Sarafu2021_UKdb_submission` which contains a folder named `sarafu_xDAI`, which contains a file named `sarafu_txns_20200125-20210615.csv`. It is this CSV file that will be used as an input here.