No.2

Ranking Statistics

247 score99.1of 100

Illinois median

95.9the median score of 1,393 stations

Scoring higher

338stations in Illinois

Sharing its score

17ranks 339 to 355

Points deducted

0.90.5 forecast check, 0.4 arrival

Counted at the median

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

Next above

KCPI2rank 339; ahead on median arrival 11 min 36 s against 11 min 52 s

Next below

WBDI2rank 350; behind on longest silence 60 min against 67 min

Sharing its rank

9other stations, equal on every measure

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 35100.035.0 of 35 pointsIllinois median 99.1168 of 168 scheduled reports received in 7 days
2. Arrivalweight 1096.39.6 of 10 pointsIllinois median 96.3half its reports arrived within 12 min
3. Continuityweight 10100.010.0 of 10 pointsIllinois median 100.0longest silence 60 min, on a schedule of one report every 60 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.