Jitter up and Jitter down
Jitter is the amount of variation in latency. It’s measured in milliseconds. You can also think of it as the time difference between each packet of data.
Jitter down corresponds to the data you receive and jitter up to the data you send.
Packets should be sent over a network in a steady, continuous stream and with the packets evenly spaced. Someone explained this to us using an analogy which makes things a little easier to understand...imagine sending each page of a book to someone one page at a time. You want each page to get there in the right order and in a steady stream so the person at the other end can read the book without any problems. That’s how we imagine packets being sent over the internet. Sometimes packets can end up in a queue, delaying the steady stream of packets and disrupting the stability or your internet performance.
The lower your jitter the better (e.g 5 ms is better than 10ms).
If you are experiencing erratic internet performance and your jitter results are very erratic (in the region of 100ms or higher) then you may wish to inform your ISP.
Kindly note that you can export data to an excel sheet or as an image to share it with your ISP.