User`s manual

Figure 8.13 8hgk-Chart Display of X Bar and R and Histogram
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Chart Boundary Values
Use these fields to specify the upper and lower boundaries
for each control chart that you select for your application.
Separate chart boundary fields are provided for the X and X
bar charts, the R and s charts, and the p charts.
Initially, when you create a new setup record using the Add
or Insert option, these fields are blank. If you do not enter
boundary values, and perform an SPC operation, the CSS
uses, by default, the low and high values indicated in the
Chart Scales screen. (In any case, you cannot set the chart
boundaries beyond the low and high values specified in the
Chart Scales screen.)
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If you are using a p chart, the chart boundary values can
range from 0.000 to 1.000.
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