Investigate what our default bridge statistics can teach us

Our default bridges publish the approximate number of IP addresses per country that requested the network status. One can find these numbers in the dirreq-v3-ips field of the bridge's extra-info document. As far as I know, nobody studied how these numbers change over time. I would love to learn the following:

• Can we use these numbers to infer where a default bridge is blocked?
• Can we see censorship events in these numbers? For example the recent network interference that happened in Belarus?
• How do these numbers correlate with other data sets? Like BridgeDB's metrics?