Caloric Results Interpretation

I got my results today from my caloric test and was informed by my vestibular physio that it means that my left inner ear is completely gone and my right inner ear is damaged. The results were that my left ear is 10 degrees and paresis, and my right ear is 4 degrees. Can anyone explain what the degrees means? What is it out of? What does the degrees mean?
Any help would be great, I see my ENT on Tuesday but really want to know what the degrees means over the weekend!
Thanks, Krista