Can you tell us more about the Alk 8.7 – 7.7 – 6.7?
I know you said that you test, and then the second number is the next day. But is that the case with the Alk? Is that 3 days of testing? What are you using to test the Alk?
Also, is the notes app page that we can see the beginning of your testing? I assume so since it would be challenging to create a new note with each test.
I think you should establish a little more of a testing history before thinking about dosing just yet. Test results can come in a little bumpy, and it just doesn't feel like enough of a history of test results to make decisions on yet.
Also, there are some nice apps you can use for logging parameters. I use AquaticLog on iOS for free.