Is there a way to report floating licence denials programmatically?

we have a requirement to monitor and report concurrent floating licence usage and the reports from the JTS can't be exported (well, I can't find any way to do it) so I wrote something to run as a client, using the REST interface.  That's fine, but I'd also like to keep a handle on the floating licence denials we're seeing at times of peak demand.  The info in the JTS reports page is helpful but I'd like to get it from a client task and also get details of who it is that's being denied, so I compile reports to help with licence negotiations.

I can find no way to do this.  If anyone knows if it's possible and can point me in the right direction, I'd be grateful.

Cliff

(CLM 5.0.2 on distributed Win 2012 servers)