This page should be read as an interpretation layer for the benchmark material in the source, not as a substitute for the underlying study documentation. The source describes Google Trends observations using rolling 12 and 36-month windows, refers to published click-through research, and also refers to observed campaign ranges. Those evidence types are not interchangeable. Google Trends reports relative search interest rather than raw lead volume; click-through studies describe search-result behavior under their own sampling rules; campaign observations reflect the specific sites, markets, and measurement setups that produced them.
Evidence required: before using a benchmark in a board paper, forecast, or vendor brief, locate the original publisher or internal record, confirm the edition and observation period, and write down the metric definition. If the supporting URL or full method is not present in this JSON, label the figure as previously published or internally observed until it is reconciled with its source.
Pass condition: the benchmark can be traced to a defined source category, period, population, and metric. Fail condition: a directional statement is being treated as a market-wide fact without enough information to reproduce or audit it.
Interpretation rule: compare like with like. A local pack visibility observation should not be treated as an organic ranking benchmark, a relative Trends index should not be described as a count of searches, and an enquiry observation should not be converted into causation without a measurement design that supports that conclusion.
Owner and validation: the person responsible for SEO reporting should maintain the evidence note, while the commercial owner should confirm that the selected metric answers a real decision question. Validate the benchmark against first-party Search Console, analytics, call, form, and Business Profile reporting where those systems are available.