Thank you Baker!
Every nation part of the Test Ban Treaty has a National Data Center (NDC), which has access to the entire dataset of the CTBTO (Test Ban Treaty Organization).
If there's data missing/not transmitted from China, those data centers would know.
In the US, it's Air Force Technical Applications Center (AFTAC). AFTAC’s mission is "the detection of nuclear detonations…anywhere in the world: below ground, in water, surface blasts, free-air, and in space."
It operates and maintains the U.S. Atomic Energy Detection System (USAEDS), which
is used to monitor treaty compliance. AFTAC collects and analyzes data from a variety of sources and is home to the U.S. National Data Center (U.S. NDC), which engages with the IMS and the International Data Centre (IDC) of the CTBTO in the exchange of data and data products as specified in the text and protocols of the CTBT.
(from: National Academies Press)
Washington Examiner can contact AFTAC (and/or any other of the national data centers of other nations) to verify if there's data missing from chinese stations.
>this is probably another attempt at a ff. You have just confirmed such.
I wouldn't know, and knowing a little about this, I have long suspected that one weakness in the treaty is low-yield small weapons tests.
However, nations doing these (against the treaty) should at least be smart enough not to have to disable the IMS' stations.
So if there's indeed data missing for no good reason, than that's an issue ….