Roanoke River at Brookneal

Ranking Statistics

247 score96.9of 100

Virginia median

95.9the median score of 1,541 stations

Scoring higher

635stations in Virginia

Sharing its score

24ranks 636 to 659

Points deducted

3.12.8 arrival, 0.4 forecast check

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Virginia median 100.0, 100.0, 96.5

Next above

SORV2rank 638; ahead on median arrival 23 min 41 s against 23 min 52 s

Next below

ICRV2rank 655; behind on median arrival 23 min 52 s against 23 min 54 s

Sharing its rank

9other 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 pointsVirginia median 97.9168 of 168 scheduled reports received in 7 days
2. Arrivalweight 1072.37.2 of 10 pointsVirginia median 92.7half its reports arrived within 24 min
3. Continuityweight 10100.010.0 of 10 pointsVirginia median 100.0longest silence 81 min, on a schedule of one report every 60 min
4. Accuracyweight 20-20.0 of 20 points, at the medianVirginia median 100.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianVirginia median 100.0-
6. Forecast checkweight 10-9.7 of 10 points, at the medianVirginia median 96.5-

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