The number of Y-axes that can be displayed on the chart. A Profile can be plotted against a specific Y-axis via the Profiles Property Page.
To modify the number of Y-axis scales, select the desired number from the drop-down list. The list contains values between 1 and 10 (or the Number of profiles value, whichever is less).
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General Property page
See
Also
General Property Page NumYScales property
Y-Axes Property Page