Your Stepcount after 10sek. = 20 Steps
Stepcount * 6 = Average Stepcount per Minute.
For me/us it's very important to slowly speed up every time we are Jogging. With "Stepcount per Minute" you're able to see if your faster than last time.
The Real Stepcount (Which will be shown in the chart) should be calculated per Minute to get a realistic result. So if you're walking/jogging 30minutes, there are 30 results which can be displayed in the chart.