From an NGX perspective, almost all of our data, definitely all the price index data is completely what we call “transparent”. It's all built off of transactional data done on screen. When I talk about the two data products, the price indices, which are very important, are completely transparent and done on screen, so there is no real opportunity for us to bias those numbers.
For the price settlement curves, as I said, we use multiple sources to develop those curves on a daily basis. Then, those curves are sent out to the marketplace as well, and the marketplace has a half-hour period to reflect or respond to those. From that perspective, really, it kind of eliminates the ability to bias those numbers.