Purcell Road

Ranking Statistics

247 score86.1of 100

Virginia median

95.9the median score of 1,541 stations

Scoring higher

1,156stations in Virginia

Sharing its score

2ranks 1,157 to 1,158

Points deducted

13.910.4 reports received, 2.4 continuity, 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

PTBrank 1,157; ahead on reports received 71.4% against 70.4%

Next below

VA-NH-3rank 1,159; behind on 247 score 86.1 against 85.9

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 3570.424.6 of 35 pointsVirginia median 97.9710 of 1,008 scheduled reports received in 7 days
2. Arrivalweight 1092.29.2 of 10 pointsVirginia median 92.7half its reports arrived within 14 min
3. Continuityweight 1075.77.6 of 10 pointsVirginia median 100.0longest silence 65 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.