Know this is the hard one and I hope I explain it in simple form. Frist thing first working from your Hypothesis you need to create data charts to log everything down. With that in mind we have a tool everyone uses in the paranormal is a recorder so you can talk in it what you are seeing digital read outs and geranial observations to add to your paperwork later. Now let say you are trying to prove the showdowns you are seeing is actually a showdown how you document this will first thing is observer what you are seeing describe everything around you at the time. The humid, tempters, weather if outside like cloudy, rain and so forth. You also want to mark down time and date. Now you have started you paperwork.
You need to make categorizers for all of that on a spread sheet that you like and now how to use. Then when you get the same thing you do the same proses over and over again and seeing what differs if any from your previous results. That is correlating data. It is time consuming and very daunting but you will know if the tempters is at this temp and humidity is at this point I should see a showdown down that cave. Or nothing at all but doing the same thing over and over again. Document everything that is in your power.
I almost forgot moon phase get that down to and if it is visible or not. All that data will help in proving or disproving your hypothesis. It will also help us move to a real science not a pseudoscience. That all we need to do the more data we gather and share with each other the more we can get to the heart of it science wise anyway. And the more we all learn and it could even lead to better equipment that we know will get what we all are looking for and a way to prove it to the world. But I am getting a lot ahead of myself.