The thresholds are set based on the available data. Over the course of time, since imidacloprid has been registered, there have been many toxicity studies conducted that feed the information to develop thresholds. The more, what we call, “toxicity end points” you have, the more they feed into the development of thresholds. So yes, the thresholds have been changing based on the available information.
Our assessment now has included at least 30 different studies to develop that threshold. The threshold that we have lies basically in the middle of the published thresholds out there. There are thresholds that are more conservative than ours, and there are thresholds that are less conservative than ours.