Mississippi River at Helena

Ranking Statistics

247 score96.4of 100

Arkansas median

96.0the median score of 678 stations

Scoring higher

296stations in Arkansas

Sharing its score

14ranks 297 to 310

Points deducted

3.63.0 arrival, 0.3 forecast check, 0.2 reports received, 0.1 accuracy

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Arkansas median 99.3, 100.0, 97.3

Next above

YCMA4rank 304; ahead on median arrival 24 min 48 s against 24 min 49 s

Next below

AR-GL-41rank 311; behind on 247 score 96.4 against 96.3

Sharing its rank

3other 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 3599.434.8 of 35 pointsArkansas median 99.4167 of 168 scheduled reports received in 7 days
2. Arrivalweight 1070.47.0 of 10 pointsArkansas median 80.4half its reports arrived within 25 min
3. Continuityweight 10100.010.0 of 10 pointsArkansas median 100.0longest silence 2 h, on a schedule of one report every 60 min
4. Accuracyweight 20-19.9 of 20 points, at the medianArkansas median 99.3-
5. Instrument checksweight 15-15.0 of 15 points, at the medianArkansas median 100.0-
6. Forecast checkweight 10-9.7 of 10 points, at the medianArkansas median 97.3-

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