Black River at Black Rock

Ranking Statistics

247 score96.6of 100

Arkansas median

96.0the median score of 678 stations

Scoring higher

265stations in Arkansas

Sharing its score

29ranks 266 to 294

Points deducted

3.43.0 arrival, 0.3 forecast check, 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

ESDA4rank 265; ahead on 247 score 96.7 against 96.6

Next below

SBFA4rank 295; behind on 247 score 96.6 against 96.5

Sharing its rank

28other 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 35100.035.0 of 35 pointsArkansas median 99.4168 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 61 min, 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.