The software Kart Analysis - PRO and Experience in addition to the numerical data also show a series of graphs with the results calculated of the behavior of the tire meter by meter on the lap . For example you can see:
Ttyre is the surface temperature that has the tyre in the different
points of the track , and is the temperature that affects the grip, in fact
each tire is designed to provide the better grip in certain
temperature values . This calculation is useful especially to the driver
to understand for each tire where is more stressed and
then you risk "to burn" it pushing too much, and where it is too cold
and then you can have a lower grip.
Tbulk is the substrate temperature of the tire in the different points of the track, just to understand, is the layer where the temperature is measured with the tools at the end of the run. This calculation is helpful to assess how the wheels are spinning , in fact if you had the instrument to measure the temperature of the tires, you can make a comparison with these data and if the values that you read are highest, mean that the driver is making to spin too the tires.