James River 1 S Columbia

Ranking Statistics

247 score91.6of 100

South Dakota median

93.1the median score of 806 stations

Scoring higher

471stations in South Dakota

Sharing its score

2ranks 472 to 473

Points deducted

8.44.2 arrival, 2.7 forecast check, 1.5 reports received

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; South Dakota median 100.0, 100.0, 72.6

Next above

SD-DY-17rank 471; ahead on 247 score 91.8 against 91.6

Next below

ABRrank 473; behind on reports received 95.8% against 94.6%

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 3595.833.5 of 35 pointsSouth Dakota median 98.2161 of 168 scheduled reports received in 7 days
2. Arrivalweight 1058.25.8 of 10 pointsSouth Dakota median 86.0half its reports arrived within 31 min
3. Continuityweight 10100.010.0 of 10 pointsSouth Dakota median 100.0longest silence 3 h, on a schedule of one report every 60 min
4. Accuracyweight 20-20.0 of 20 points, at the medianSouth Dakota median 100.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianSouth Dakota median 100.0-
6. Forecast checkweight 10-7.3 of 10 points, at the medianSouth Dakota median 72.6-

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