About Chart Series Maximums

The maximum is the largest data value of data to be displayed on an axis. You can manipulate the maximum value to focus on data when it falls in the middle or toward the bottom of a Y-axis. You can also use it to "stretch" the chart horizontally. This is especially useful when viewing markers that are displayed at 15-minute intervals.

For example, a chart whose Y1 axis is set to Auto may appear like this:

You cannot see much detail on the red line representing KW data between 12:00 and 18:00. If you set the Y1-axis maximum to a smaller value, the chart is redrawn allowing a more desirable level of detail to be shown.

Changing the maximum allowable value effectively "zooms in" on the data. Notice that the KVAR data is not changed. That is because it is on the Y2-axis and it remains at its original setting.