Since different groups prefer different temperature sets I tried to use all of them as much as possible. There is one other station set that I did not include that is also commonly used and that is the GISS. I wanted to have 2 of each so I chose the ones that I considered the best of each category and have stuck with that. There is also the HadCRUT which is a version that includes the ocean and the CRU (which is land only), but that method interestingly enough matches the blended set fairly well. So instead of using that one, I use the CRU (the oldest one) and the GHCN for the station.
