Bio-Rad Microplate Manager Software - Manual (Page 101)

Chapter 6. Data Formatting and Reports
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Matrix Report
Figure 66. Matrix Report.
The Matrix Report is similar to the Limit Report (see above), except that the data
between the upper and lower limits are divided into 10 equal ranges, numbered 0–9.
Each well with data within the limits is assigned a number, based on which range its
data falls into.
See the description of the Limit Report for instructions on how to set limits.