The Step Count Graph shows the number of steps (up to 1,000) you have taken each hour. This lets you easily check your walking pace over the past 10 or 11 hours.
The Step Count Graph is not displayed while the step count is zero.
Graph contents are normally updated at the top of each hour.
Checking Your Progress to Your Daily Step Target
The graphic display area shows your current progress toward achieving the daily step target specified by you.