Piscataway Creek 4.2 SW Tappahannock

Ranking Statistics

247 score98.3of 100

Virginia median

95.9the median score of 1,541 stations

Scoring higher

332stations in Virginia

Sharing its score

105ranks 333 to 437

Points deducted

1.71.2 arrival, 0.4 forecast check, 0.2 reports received

Counted at the median

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

Next above

LSGV2rank 422; ahead on longest silence 105 min against 120 min

Next below

NNWV2rank 430; behind on median arrival 15 min 54 s against 15 min 55 s

Sharing its rank

6other 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 3599.434.8 of 35 pointsVirginia median 97.9167 of 168 scheduled reports received in 7 days
2. Arrivalweight 1088.28.8 of 10 pointsVirginia median 92.7half its reports arrived within 16 min
3. Continuityweight 10100.010.0 of 10 pointsVirginia median 100.0longest silence 2 h, 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.