Blackwater River at Dendron

Ranking Statistics

247 score78.3of 100

Virginia median

95.9the median score of 1,541 stations

Scoring higher

1,371stations in Virginia

Sharing its score

6ranks 1,372 to 1,377

Points deducted

21.717.5 reports received, 2.7 arrival, 1.2 continuity, 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

FW6649rank 1,372; ahead on reports received 53.5% against 50.0%

Next below

GW0066rank 1,374; behind on reports due 672 against 504, the longer record first

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 3550.017.5 of 35 pointsVirginia median 97.9336 of 672 scheduled reports received in 7 days
2. Arrivalweight 1073.37.3 of 10 pointsVirginia median 92.7half its reports arrived within 23 min
3. Continuityweight 1087.98.8 of 10 pointsVirginia median 100.0longest silence 66 min, on a schedule of one report every 15 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.