^^^
You beat me to it Skadi.
It strange though, those charts
were on the same webpage as the other vaac charts until a couple of days ago. And instead of the guff about 'engine manufacturer tolerance levels' (which engine/manufacturer?) the charts
were described in terms of standard thresholds level (not that that actual give me a practical datum to understand the relevance!). Now the only place to see that chart is under the 'pressoffice' part of the site. Priorities seem to have changed and
PR is now at the forefront.