TBB Meter Outage

Anyone (Andrew?) have any idea what happened here yesterday afternoon as nothing untoward shows on any other graphs for that time ca 14:45 - 15:20 and I wasn't in the house and there was only one low-usage PC running (other DSLstats graphs are currently available via my sig at the time of posting this).

Edit while about to post: I've just spotted on the Plusnet forum on this thread three other graphs with the identical loss! Also another in a sig link that has a further one in the evening around 22:00....

As mentioned in another post, wouldn't it be nice if established members could post images...

Explained...

Okay thanks. I had searched for TBB but not BQM!

Looks like it may be happening now as lots of packet loss down to 100% but no other visible problems. Not normally any latency problems this time of the morning.