James River at Richmond Locks

Ranking Statistics

247 score98.0of 100

Virginia median

95.9the median score of 1,541 stations

Scoring higher

487stations in Virginia

Sharing its score

8ranks 488 to 495

Points deducted

2.01.7 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

LNBV2rank 488; ahead on reports due 224 against 186, the longer record first

Next below

CBLV2rank 491; behind on reports received 100% against 98.6%

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 35100.035.0 of 35 pointsVirginia median 97.9186 of 186 scheduled reports received in 7 days
2. Arrivalweight 1083.48.3 of 10 pointsVirginia median 92.7half its reports arrived within 18 min
3. Continuityweight 10100.010.0 of 10 pointsVirginia median 100.0longest silence 66 min, on a schedule of one report every 54 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.