(David Fifield)
The number of concurrent users of the snowflake-01 bridge and its bandwidth again remained stable throughout May 2023. Some users have been displaced onto the snowflake-02 bridge, which is separately managed and whose metrics are not shown in these graphs.

The number of users by country:

For about three days, from 2023-05-12 to 2023-05-15, Snowflake's broker rendezvous was partially blocked in China. The manner of blocking was unusual, apparently relying on the presence of multiple HTTPS requests happening within a short time. You may be able to barely see the temporary decline in users from "cn" in the above graph; here is a zoomed-in version. At the end of May, we got a report of throttling of Snowflake (and other) WebRTC connections in China. The Tor anti-censorship is investigating and working on mitigations.
On 2023-05-22, we upgraded Tor on the bridge to version 0.4.7.13. This upgrade was more complicated than usual, as it changed the way that Tor makes outgoing TCP connections. We had to add new functionality to the other programs that run on the bridge that receive connections from Snowflake proxies and forward them to Tor.