Cup test

So I set out ten containers and after 15 min not much water in them is this why you guys use 20-30 tuna cans so you have more sample areas to measure from. Or are am I really only measuring 1/8ths of a inch and little water is expected

It ended up 10 containers added together 1.5inch total over that’s .45inches per hour

Total combined water depth x 3 because it was a 20min run / 10 because 10 identical containers where used.

Does that seem correct do I really have that low of flow or do I need allllot more containers?

Here is a good tutorial and catch cup tests. Hope this is helpful!