There was [presentation](https://www.igvita.com/slides/2012/bigquery-github-strata.pdf https://www.igvita.com/slides/2012/bigquery-github-strata.pd...) from the

There was [presentation](https://www.igvita.com/slides/2012/bigquery-github-strata.pdf https://www.igvita.com/slides/2012/bigquery-github-strata.pd...) from the creator of gharchive.org and github employee (I guess) about open source metrics, based on github data Here is an example using playground from this paper to calculate pull pull request latency (i.e. how much time user need after fork to submit a PR) - https://tinyurl.com/github-popular-repo-pr-latency https://tinyurl.com/github-popular-repo-pr-latency (I wouldn't post here full query, since it is not that compact, but it is not complex) It does not match with 2012: >80%+ pull requests come in within 1 day of the fork But new query calculates statistics only for popular repos.