National trends and indices provided by coordinators of the national bird monitoring schemes participating in the PECBMS network are aggregated into supranational species trends and indices (e.g., regional, European, and EU) by the PECBMS coordination unit.
A standard procedure consists of several steps:
2.1 Delivery of national data to the PECBMS coordination unit
Box Data checks
Box Participating countries
2.2 Combining national data into supranational outputs
Box Missing values II
2.3 Types of supranational results that PECBMS produces