Grafton

Ranking Statistics

247 score97.7of 100

Illinois median

95.9the median score of 1,393 stations

Scoring higher

503stations in Illinois

Sharing its score

10ranks 504 to 513

Points deducted

2.31.4 arrival, 0.5 forecast check, 0.4 reports received

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Illinois median 100.0, 100.0, 94.7

Next above

SARrank 508; ahead on reports due 504 against 336, the longer record first

Next below

GUNI2rank 510; behind on reports due 336 against 168, the longer record first

Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.

1. Reports receivedweight 3598.834.6 of 35 pointsIllinois median 99.1332 of 336 scheduled reports received in 7 days
2. Arrivalweight 1086.18.6 of 10 pointsIllinois median 96.3half its reports arrived within 17 min
3. Continuityweight 10100.010.0 of 10 pointsIllinois median 100.0longest silence 60 min, on a schedule of one report every 30 min
4. Accuracyweight 20-20.0 of 20 points, at the medianIllinois median 100.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianIllinois median 100.0-
6. Forecast checkweight 10-9.5 of 10 points, at the medianIllinois median 94.7-

The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.