Where are those limits stored? In the same table as measurement results with each group having their own limit? Different specification table? In some other data structure?
I assume they are stored in the same table in their own columns.
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You can do something like this fairly easily in graph builder by disabling/enabling correct variables (columns) for two separate plots while having the value + limit columns in Y-axis
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If you were to move groups to X-group instead of X-axis you can get this
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or you can move the X Group edge to bottom
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-Jarmo