# How Golf Sim Data measures demand

> One written rulebook for every venue; a changed rule is a new model version.

## Polling

- Every bay block is read every 5 minutes (288 times a day) from two days before its date until it starts, and hourly three to nine days ahead. Each studio is read by one collector only, never twice.
- Every read is the booking page’s own public availability response, archived verbatim with its time; failed reads are kept.
- No logins and no private accounts: only what any visitor to the studio’s booking page can see.

## From inventory to sales

- A slot is one bookable start time with a capacity counter, in the venue’s own unit (an admission, a seat, a room block).
- Unavailable units U = capacity − remaining. A rise in U between polls within 20 minutes, at equal capacity, is a sale; a fall is a reopen; anything else is ambiguous.
- Units gone at the first poll count toward the final state, not observed sales.
- A final state counts only if seen within 20 minutes of the start; otherwise sold units are a modeled range up to capacity.

## Figures

- Utilization: Σ sold ÷ Σ capacity at entry, with coverage (share of capacity whose final state was seen).
- Revenue (GBV): units sold × sourced prices, packages and memberships, as a log-normal estimate. Prices are never backdated.
- Every estimate carries an 80 % interval (P10–P90) and an A–D grade for its width.
- Markets: venue revenues add as independent estimates; utilization is unit-hour weighted; unlike units never add.
- Next-day forecast: current bookings plus comparable slots’ pickup from the same lead time, withheld unless 80 % of open capacity has comparables.

## Rules

- Unknown is never zero: missing or conflicting observations widen intervals and lower coverage.
- Raw is truth: responses are stored verbatim by SHA-256 hash and never edited; every figure is rebuilt from them.
- Models are versioned and proven against each venue’s raw data; released versions are frozen.

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Golf Sim Data — The first market intelligence platform for indoor golf studios. Canonical page: https://golfsimdata.com/methodology · Contact: luke@fronresearch.com · Index for agents: https://golfsimdata.com/llms.txt · Updated 2026-11-04