Rock River at Rock Valley

Ranking Statistics

247 score97.1of 100

Iowa median

94.7the median score of 1,060 stations

Scoring higher

198stations in Iowa

Sharing its score

24ranks 199 to 222

Points deducted

2.91.6 forecast check, 1.3 arrival

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Iowa median 100.0, 100.0, 83.8

Next above

OOAI4rank 199; ahead on longest silence 60 min against 63 min

Next below

ALMI4rank 214; behind on longest silence 63 min against 64 min

Sharing its rank

13other 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 pointsIowa median 99.0168 of 168 scheduled reports received in 7 days
2. Arrivalweight 1086.88.7 of 10 pointsIowa median 82.9half its reports arrived within 17 min
3. Continuityweight 10100.010.0 of 10 pointsIowa median 100.0longest silence 63 min, on a schedule of one report every 60 min
4. Accuracyweight 20-20.0 of 20 points, at the medianIowa median 100.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianIowa median 100.0-
6. Forecast checkweight 10-8.4 of 10 points, at the medianIowa median 83.8-

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