Coverage is assessed based on whether the quality-relevant activities and organizational units at a site have successfully obtained and maintain a valid ISO 9001 certification for their Quality Management System. For consistency reasons with other KPIs, the basis for the calculation is the number of Siemens environmentally relevant sites, which are those locations that report on related criteria and thresholds. These include plants, production facilities, data centers, offices, warehouses, and own-operated project sites.