Even before that time any true scientist would have said data collected was invalid because people had known for centuries the sun was a variable star and it was not possible to separate influences for any mathematical computations. Now that it is possible to separate the influence of the sun the analysis of such a complicated interaction is very likely still beyond mathematical reasoning. Therefore, political rhetoric must be substituted for application of the scientific method.
I teach people to ride motorcycles. As such I am outside on a big parking lot for several hours each day. I have done this for years. This year the sunlight feels hotter than other years. Usually the sun shining on me would seem to be about the same temperature as the surrounding air. This summer however when the sun shines and I am in it the radiant energy feels uncomfortably hot to the point where I have to shield my body and eyes. I have not felt that much radiant energy in the past 15 years.