Chicago - Chicago River at Columbus Dr

Ranking Statistics

247 score91.5of 100

Illinois median

95.9the median score of 1,393 stations

Scoring higher

940stations in Illinois

Sharing its score

1no other station

Points deducted

8.54.1 arrival, 3.5 reports received, 0.5 forecast check, 0.3 continuity

Counted at the median

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

Next above

SCOI2rank 940; ahead on 247 score 91.6 against 91.5

Next below

HRVI2rank 942; behind on 247 score 91.5 against 91.4

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 3590.031.5 of 35 pointsIllinois median 99.1504 of 560 scheduled reports received in 7 days
2. Arrivalweight 1058.85.9 of 10 pointsIllinois median 96.3half its reports arrived within 31 min
3. Continuityweight 1096.79.7 of 10 pointsIllinois median 100.0longest silence 60 min, on a schedule of one report every 18 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.