What do you mean "What do you mean"? Hard, unadulterated data. Even Rajendra Pachauri concedes that there has been no warming for 17 years.
Compare that time, which warmists say is too short to be relevant to the warming period from early '70s [a low point] to '98 which is about 25 years. Why is 17 years too short to be a trend but 25 years a "proven" scary uptrend? Shades of double standards here.