Northbrook - WF N BR Chicago

Ranking Statistics

247 score96.1of 100

Illinois median

95.9the median score of 1,393 stations

Scoring higher

660stations in Illinois

Sharing its score

14ranks 661 to 674

Points deducted

3.93.3 arrival, 0.5 forecast check

Counted at the median

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

Next above

FEEI2rank 661; ahead on longest silence 60 min against 62 min

Next below

MMOI2rank 673; behind on median arrival 26 min 36 s against 26 min 52 s

Sharing its rank

10other 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 1066.86.7 of 10 pointsIllinois median 96.3half its reports arrived within 27 min
3. Continuityweight 10100.010.0 of 10 pointsIllinois median 100.0longest silence 62 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.