Little Sioux River 3 NW Spencer / Highway 18

Ranking Statistics

247 score94.4of 100

Iowa median

94.7the median score of 1,060 stations

Scoring higher

618stations in Iowa

Sharing its score

11ranks 619 to 629

Points deducted

5.63.4 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, 83.8

Next above

NWSI4rank 624; ahead on median arrival 26 min 37 s against 26 min 49 s

Next below

CBSI4rank 626; behind on reports received 98.0% against 95.2%

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 99.0659 of 672 scheduled reports received in 7 days
2. Arrivalweight 1066.46.6 of 10 pointsIowa median 82.9half 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 83.8-

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