When you are using the PADI RDP it is recommended that you add 10 feet to the depth of your dive when you dive in cold water. With all the comments that I have heard various people make about what they consider cold I am wondering what is the definition of cold water for the PADI RDP? I ask since I made my "coldest" dive Saturday--39 degrees F. However 45 to 50 degrees F is not unusual for me. I wear a 3/2 full body wetsuit. Thanks for any information.