What is the difference between ping check in Windows console and DevTools?

Question

Google Chrome

Hello!
Faced such a moment: you need to measure the ping of the site as accurately as possible. Before that, I always used the Chrome debugger, but now I decided to check it through the console. But the scores vary greatly. In the console, I processed 20 packets as an average.
Who can tell where exactly and what to believe? Maybe I'm doing something wrong?