Rock Falls - Sinnissippi Dam

Ranking Statistics

247 score93.6of 100

Illinois median

95.9the median score of 1,393 stations

Scoring higher

873stations in Illinois

Sharing its score

2ranks 874 to 875

Points deducted

6.45.4 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

LRYI2rank 873; ahead on 247 score 93.7 against 93.6

Next below

SPFI2rank 875; behind on reports received 98.8% against 97.6%

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 99.1166 of 168 scheduled reports received in 7 days
2. Arrivalweight 1046.04.6 of 10 pointsIllinois median 96.3half its reports arrived within 37 min
3. Continuityweight 10100.010.0 of 10 pointsIllinois median 100.0longest silence 2.3 h, 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.