问题
I am very new to WP development and have created my first application. When I run it, I see some data printed vertically on the emulator Screen.
What are these, and what do they indicate?

回答1:
These are performance counters for your app. Here is the image that describe them.
// Display the current frame rate counters.
// This is enabled by default in your app
Application.Current.Host.Settings.EnableFrameRateCounter = true;
These are for monitoring your app. Like frame rates etc.For more info check this Reference.
Ctrl + F "Enable frame rate counters"

来源:https://stackoverflow.com/questions/25462867/what-do-the-numbers-mean-in-the-upper-right-hand-side-of-the-emulator