Frederika - EF Wapsipinicon River

Ranking Statistics

247 score94.4of 100

Iowa median

94.7the median score of 1,055 stations

Scoring higher

632stations in Iowa

Sharing its score

8ranks 633 to 640

Points deducted

5.63.3 arrival, 1.6 forecast check, 0.7 reports received

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Iowa median 100.0, 100.0, 83.6

Next above

KESI4rank 637; ahead on median arrival 26 min 36 s against 26 min 37 s

Next below

SHLI4rank 641; behind on 247 score 94.4 against 94.3

Sharing its rank

1other 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 3598.134.3 of 35 pointsIowa median 99.1659 of 672 scheduled reports received in 7 days
2. Arrivalweight 1066.86.7 of 10 pointsIowa median 82.8half its reports arrived within 27 min
3. Continuityweight 10100.010.0 of 10 pointsIowa median 100.0longest silence 45 min, on a schedule of one report every 15 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 83.6-

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