SW Branch Back River at Langley Marina (IN MLLW)

Ranking Statistics

247 score94.0of 100

Virginia median

95.9the median score of 1,554 stations

Scoring higher

935stations in Virginia

Sharing its score

3ranks 936 to 938

Points deducted

6.03.4 arrival, 1.7 reports received, 0.5 continuity, 0.4 forecast check

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Virginia median 100.0, 100.0, 95.7

Next above

BKNV2rank 936; ahead on reports received 95.4% against 95.1%

Next below

BLYV2rank 939; behind on 247 score 94.0 against 93.9

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 3595.133.3 of 35 pointsVirginia median 97.6799 of 840 scheduled reports received in 7 days
2. Arrivalweight 1066.36.6 of 10 pointsVirginia median 92.7half its reports arrived within 27 min
3. Continuityweight 1095.19.5 of 10 pointsVirginia median 100.0longest silence 42 min, on a schedule of one report every 12 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 10-9.6 of 10 points, at the medianVirginia median 95.7-

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