Concepts
Core to the data used GPO is the idea of the aggregated shift. This contains all of the aggregated production statistics for that shift and can either be pulled automatically from a source system, or pushed by the public API into GPO. These shifts are then used to calculate the aggregated production statistics for the predefined timespans (day, week, month, and year).
The entire GPO public API can be found in the API documentation and each endpoint contains a description of the parameters and the expected response.