How’s my current speed calculated?

• The graph shows a collection of independent "Current Speed"'s which collectively are function of time. "Current Speed" is calculated real-time and is shown almost every 500 milliseconds as follows:

current speed = loaded size / test duration

• The final result is the average speed as follows:

final speed = sample size / test duration

• So, the 'final speed' is not simply average of 'current speed's... It is instead average download speed of the entire sample file. Please keep in mind that the last 'current speed' and 'final speed' are almost equal because the function parameters values are almost the same.