Merrimac

Ranking Statistics

247 score94.7of 100

Iowa median

94.7the median score of 1,060 stations

Scoring higher

415stations in Iowa

Sharing its score

140ranks 416 to 555

Points deducted

5.33.3 arrival, 1.6 forecast check, 0.4 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

EDBI4rank 496; ahead on median arrival 26 min 36 s against 26 min 37 s

Next below

AMDI4rank 529; behind on median arrival 26 min 37 s against 26 min 44 s

Sharing its rank

30other 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 3599.034.7 of 35 pointsIowa median 99.0665 of 672 scheduled reports received in 7 days
2. Arrivalweight 1066.86.7 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.