I am looking for a reference for extended event fields. For instance in the blocked process report, there is a wait time in the blocked-process node. I have found one reference that says that this is in milliseconds but it is a few posts down in a Microsoft technet article. I think that many times the description for the field in the XE GUI is pretty good. But there still is some guessing. I've searched a bit for something like this but haven't found it yet. May just not have hit the right search term yet.