The program HXT_TEEM can be used to determine thermal fits to the data. It returns pairwise fits of the four channels, i.e., three independent values for temperature and emission measure. The instrument is sensitive to temperatures as low as 15 MK, but at the time of writing no systematic comparison of these temperatures with, say, those of the GOES photometers, had been carried out. The HXT_TEEM program has an interactive background determination feature that may make it easier to generate consistent temperature fits (Med1/Low and Med2/Med1) in the presence of the temporal variations of the background rates.