Assuming the graph is showing ET, I can vouch for the mess at ~12:42. Am on beam 68, but I think that may be irrelevant since it appears to be system-wide.
That said, the SQF may be relative. For example, my usual level is around 104-110, which is generally pretty good. Any full outages I see might be less frequent than someone who has a lower usual SQF because it's easier for them to hit the lower threshhold.
However, I seem to be on a different IPGW ID than I was at 12:42 (either that or my memory is failing me), which means that although a prolonged outage might not have affected me, something was severe enough to trigger re-association with the gateway. It was likely quick enough that I didn't even notice.