It would be best for you to create an account at testmy.net and do the tests under that account. The reason for this is that it will save the tests you run and can show a pattern over time that can be very helpful in determining speed problems. The way you ran your most recent five tests in the picture above is perfect, using the manual 12MB test size. You would just do the same under the account you created.
Then, after having run some tests like Chris outlined, but under the account you created there, you can paste the "Results" URL (when signed in you click on "Results" and just copy and paste the URL into a post on here), which will allow the reps to look at all of the tests, including individual aspects of each test on their own. With doing this, you won't have to post pictures or post links to each individual test. It will all be saved in one place, making it easier for the reps to see and help.
Plus, it makes it easier for YOU to see your recent and past tests, as well.
Have you run any tests under that account yet (you may not have yet)? It's not showing any tests.
When you click on the Results tab toward the top right of the page, it will take you to the results of the tests you've run under that account. The URL of that page is the one to copy and paste. I'll post mine so you can see what I mean, and your URL will look the same, but with your name instead of mine (Gabe1972) at the end of it.
It will look like this...
Trying again. I may not have been signed in to my account on "testmy".
I did several test at 1700 EST with the same results. I';ll try to retrieve these tests.