Some jurisdictions do not report violation severity in their available inspection reports. Violations in this case are classified as "unknown" violations, rather than critical or non-critical, to clarify that no severity rating was given by a health department.
Example's of "unknown" violations:
The Average Violations chart in Insights provides the option of grouping unknown and non-critical violations together, or keeping them as separate data series.
Here, unknown violations are charted in their own data series:
