Problem with a Product Specification/Data Point that is User Generated (Range may vary)

This might be a bit hard to explain but hope you can understand me.

I have this current problem. Let's say I have website that is for a database of sports drinks/water with product information about it.

I have an ability for users to measure the PH level themselves at home and submit it to the database. Now I have a problem that is, what if there is multiple submissions on the end of the PH spectrum, I.E one submission at 2 and one submission at 9.

My 2 questions are:

  1. When people want search and filter our database by PH submission - what value should I assign to this product with the varying range?

  2. I am confused how I could display this as well

Hope this make sense!