Every derived climate value carries the tier, grade, station, and distance that produced it.
Well established · suboptimal if ignored → advise
How it works
Frost percentiles exist only at NCEI stations. Values elsewhere are offsets or model output. A bare date conceals the difference between a measurement and an inference.
The evidence
Evidence: settled without a trial - definition.
Cite this page
Milpa Gardens. "Every derived climate value carries the tier, grade, station, and distance that produced it." Evidence grade: Well established. https://milpa.garden/rules/derived-climate-value-carries-tier-grade-station/
A garden-planning corpus: every claim states its evidence grade and links its sources on the page. Cite it with the grade, and add the date you read it.