Only the images of me holding the gray cards were done at differing temperatures. The others were a comparison of the two brands of developers at 100 degrees. Here is the same test performed, this was the original, but for proper testing I always run it twice to verify results. I previously posted the second test. Here is the first. They are labelled as "lab", "100", "77", and "68" referring to whether I processed them at what temperature, or they are from a lab of known quality.