To Arlone Wonderlin Folkers,
This is the main place where I've found detailed information regarding my concerns. I was introduced to the idea from another website, but I cannot recall where.
Read the first paragraph, and then you can scroll down to find a chart of fresh versus stored urine for the actual nutrient content as well. Scrolling down even further reveals yet another chart that helps you to see the length of storage and the safety of the urine.
I do not know the reliability of the information contained in the site, but it is presented in a way that makes me feel they are trustworthy. Let me know if you find out anything about the temperature of storage over 20 degrees Centigrade. Thanks.