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metrics/README.md

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+# Metrics Gathering
+
+We've created a bash script that runs daily to collect our metrics and store them as csv.
+This is because _currently_ GitHub is only storing the last 14days worth of data.
+
+We use the [github_traffic_stats](https://github.com/nchah/github-traffic-stats) python package to gather our metrics in three csv files.
+
+Then we have created merge.sh to merge these metrics with the previous days csv and then sort by date order.
+
+We are storing our latest metrics files on a branch called 'metrics'. This is because we don't want to push directly to main.