It seems evenings are really starting to be the peak usage now, and at present we are increasing capacity. We have increased again today.
The stats we publish are reflecting these recent increases well, with 100.0% unerrored seconds daytime on 20CN, 21CN and BE links over the last 7 days. The 24 hour unerrored seconds are coming up and we are obviously aiming for 100.0% on those as well. Unerrored seconds is very sensitive measure - if we drop a single packet due to a link being full then the whole second is flagged as errored.
The shift to evening/weekend usage has happened gradually over a long time. We may consider adjusting the off-peak units allowance on 21CN as a result of this, but that will be announced separately.