I think there are a couple of things.
First, it is difficult to establish exactly what that threshold is. Perhaps my colleagues who will be appearing later from that department will have more to say on that.
Also, it was done in a relatively expeditious way, so there was not perhaps as much opportunity to do some of the things we've been asked about today in terms of analysis ahead of time, but it's certainly something that we're taking back and we'll be considering further as we go forward.