The code used is jQuery countTo which you can find on GitHub. The ‘data-speed’ value is responsible for the amount it takes to go from the starting value (data-from) to the end value (data-to) in milliseconds. So the value for the counter for ‘Completed Daily Test Runs’ that goes from 1 to 10000 in 36000000 milliseconds, will take 10 hours to complete.
See more info on GitHub here: