Depending on the context of TPR it refers to Temperature, Pulse and Respiration the 3 parameters taken by the TPR steward (certified) prior to, and after each leg of an endurance event. It is also important for the horse owner to be able to take these to relay to the veterinarian. The veterinarian can then determine quickly how much stress the horse is under to schedule the call out or give over the phone interim advice. Online Equine
Looks about right to me.
I'm in Australia so we work in degrees centigrade so about 37. Your horse's temperature also varies between the morning and afternoon by about 1 degree for example 36.55 in the morning and 37.12 in the evening.
Heart rates vary with each horse so you need to know what is normal for your horse. My boy's resting heart rate is about 30 and his respiration is 7 - so perfect for endurance! Online Equine