When requesting availability data from WeatherKit Rest API I am currently seeing an addition undocumented dataset name: trendComparison. https://developer.apple.com/documentation/weatherkitrestapi/dataset What is this dataset? Is it new data or is it a mistake? Will the documentation be updated?

Are there any rate limits that apply to the WeatherKit REST API? Would there be any restrictions on how often and how many requests can be made in a unit of time that's more specific than the total monthly limit? Would the API throw an error if we asked for the same locations data too soon? If so how would that concept of too soon be defined? And would that error be a 401 Unauthorized or some other defined error specific to this situation?