OriginInspectorMeasurements : A measurements object provides a count of the total number of responses received by Fastly from your origin servers in the reported time period, for the relevant POP and backend name as specified in the entry. It also includes the number of responses for specific HTTP response status codes and for status code ranges. This dataset is sparse: only the keys with non-zero values will be included in the record. Where a specific status code does not have a field in this model (e.g., 429 Too Many Requests), any responses with that code will be counted as part of the range count (4xx in this case) but will not be separately identified in the data.