Documentation

How OTC is built and what a release contains.

Sources

The fifteen open datasets OTC combines, what it takes from each, and how they rank at one location. Each source has its own page.

Method

Fitting, time-base and broken-record checks, record and constituent selection, automation and the release gate.

Conventions

The phase reference, nodal corrections and constituent names behind every constant set.

Validation

How accuracy is measured against official predictions, and the results at 11 stations.

Data format

The fields of a release, the JSON Schema and the converters. The files themselves are on Downloads.