This chart allows you to compare the subgroup averages from multiple retrieval groups that share a similar combination of date/time stamp and/or traceability values that you select. You can also configure SPC to lump similar date/time stamps together (and define the maximum length of time to consider them "similar"), to compare specific traceability fields, or to sort data by traceability values instead of sorting by date/time stamps.
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Matching and sorting data records in a Combined Control Chart