Unnamed Tributary at New Alexandria Tide Gate Downstream

Ranking Statistics

247 score97.9of 100

Virginia median

95.9the median score of 1,541 stations

Scoring higher

495stations in Virginia

Sharing its score

13ranks 496 to 508

Points deducted

2.10.9 reports received, 0.8 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

MCBV2rank 504; ahead on reports received 97.8% against 97.3%

Next below

PRTV2rank 507; behind on reports received 97.3% against 97.1%

Sharing its rank

1other 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 3597.334.1 of 35 pointsVirginia median 97.9981 of 1,008 scheduled reports received in 7 days
2. Arrivalweight 1092.39.2 of 10 pointsVirginia median 92.7half its reports arrived within 14 min
3. Continuityweight 10100.010.0 of 10 pointsVirginia median 100.0longest silence 30 min, on a schedule of one report every 10 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.