Water Diary

After a lot of logging and bugging my siblings and a lot of approximating I had a full list of numbers and was unsure of how to average them. I scoured the internet for something to help me with the gallons and averaging all the water and stumbled upon this website...http://www.h2oconserve.org/home.php?pd=index
This website has a set of questions that I had the answers to through my logging and I could get the information I needed.