been using an external temperature gauge which is a huge thermometer that they have with a digital readout. interiorly inside of the car, they have temperatures monitors that are set up within the vehicle. my thought is that they are also utilizing more than likely heat sensitive video as well to see the rise and fall of temperature. >> the d.a.'s office has not released the findings of the heat test, but for most people, left heartbroken by this case, the exact temperature is an after thought when compared to the toddler's agonizing death. >> you still have a child that's strapped in a car that's exposed to extreme heat, that i can assure you no adult would be able to endure. i certainly couldn't endure it. >> reporter: now we heard during the probably cause hearing that there were scratches on the child's face, bruises on back of his head, quite possibly sustained while he was in that car seat. of course, we're still waiting