Yes, it looks correct. I see the user count was added in a later version than when the article was originally created. If you look at the pingService REST service, you will see it calls the pyGetHealthStatus activity. Here you can see the duration and count values being set.
I too am not able to access the URL stated in your post and was unable to find out anything about it on research. Do you mind creating a feedback item with PDN team by clicking the black feedback button available on the bottom right of your screen please?
Our apologies for the extremely delayed reply. The product documentation team has reported that --
"This content has been archived. Since it’s for [PRPC] 5.1 we’re no longer supporting documentation that old. [They have] put in a feedback request in Agile Studio for new content to be created on the same topic."
We are glad to see that the solution provided previously in this discussion thread met your needs.
Thanks for submitting your Suggested Edit. We will be more responsive in the future.