DRAFT / Data Notes
What should I check before using a market observation?
An editorial explanation of passport fields. Not an empirical study.
- Review
- Not completed
- Freshness
- Review when the data contract changes; public review is not complete.
01 / Where does the number come from?
The source name identifies the origin of an observation. Naming a source does not, by itself, establish completeness or quality.
02 / When did it happen?
Event time and update time are different fields. A recently refreshed interface does not necessarily contain a recent observation.
03 / What is outside the coverage?
Check the market, venues, observation window and gaps. Limited coverage cannot be generalized to the whole market without explanation.