Automatically calculating standard mean and standard deviation from data

When the cl_source for a characteristic is configured to calculate standard mean and standard deviation dynamically (cl_source = 0), or for a QM specification that overrides the characteristic, the standard mean and standard deviation are calculated when the result data is logged in the MES database, and it satisfies the following conditions:

• The minimum number of individual readings is at least equal to the minimum sample size.

• The number of samples for a characteristic prior to the current sample must be at least equal to the configured value (samples_before_cl) for a characteristic, or for a QM specification that overrides the characteristic. By default, the number of sample is 1.

• The number of samples that are not ignored for a characteristic must be fewer than or equal to the configured value (samples_for_cl) or for a QM specification that overrides the characteristic, if samples_for_cl is greater than 0. By default, if the configured value is 0, all samples that are not ignored are used for calculation.