A community estimate for one grade band, with its evidence.
gradedbooleanrequiredbandIdenumrequiredA grade band: 9.8+, 9.0-9.6, 7.0-8.5, 4.0-6.5, under-4.
One of9.8+9.0-9.67.0-8.54.0-6.5under-4
bandFloornumberrequiredThe band’s lowest grade (stored as market_estimates.grade).
methodenumrequiredOne ofcommunity_medianheuristic
valueCentsintegerrequiredlowCentsintegerrequiredhighCentsintegerrequiredcurrencystringrequiredISO 4217 code, e.g. USD.
sampleSizeintegerrequiredPrices used after trimming (0 for a heuristic).
saleCountintegerrequiredpurchaseCountintegerrequiredtrimmedCountintegerrequiredPrices set aside as outliers.
firstObservedOnstring (date) or nullrequiredlastObservedOnstring (date) or nullrequiredwindowDaysintegerrequiredspreadnumber or nullrequiredRobust spread of log prices; null when unknown.
confidencenumberrequired0–1, consistent with confidenceLabel.
confidenceLabelenumrequiredOne oflowfairgoodstrong
limitingFactorenumrequiredOne ofsamplespreadrecencyheuristic
basisobject or nullrequiredWhere a heuristic number came from: the neighbouring bands it was interpolated between.
kind"interpolated"requiredlowerobjectrequiredbandIdenumrequiredA grade band: 9.8+, 9.0-9.6, 7.0-8.5, 4.0-6.5, under-4.
One of9.8+9.0-9.67.0-8.54.0-6.5under-4
valueCentsintegerrequiredsampleSizeintegerrequiredlastObservedOnstring (date) or nullrequiredupperobjectrequiredbandIdenumrequiredA grade band: 9.8+, 9.0-9.6, 7.0-8.5, 4.0-6.5, under-4.
One of9.8+9.0-9.67.0-8.54.0-6.5under-4
valueCentsintegerrequiredsampleSizeintegerrequiredlastObservedOnstring (date) or nullrequired