sis:hasCoverageFactor

Scientific decimal format for coverage factor values for uncertainties that must be greater than one or equal to one. Based on type xs:double.

The related type in the XML serialization is a xsd:double restricted by the following regular expression: "\+?(([1-9]\d*\.\d*)|([1-9]\d*))|NaN"

https://www.ptb.de/si/v2.2.1/SI_Format.xsd#kValueType

points to the coverage factor, i.e., to a factor (greater than or equal to unity) by which the expanded uncertainty relates to the standard uncertainty

has coverage factor

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