Nw Branch Anacostia River at Brentwood

Ranking Statistics

247 score87.5of 100

Maryland median

89.0the median score of 736 stations

Scoring higher

386stations in Maryland

Sharing its score

3ranks 387 to 389

Points deducted

12.510.9 reports received, 0.8 forecast check, 0.6 arrival, 0.2 accuracy

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Maryland median 99.0, 100.0, 92.1

Next above

CHLM2rank 387; ahead on longest silence 41 min against 60 min

Next below

LKRM2rank 389; behind on reports received 68.8% against 68.6%

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 3568.824.1 of 35 pointsMaryland median 82.1347 of 504 scheduled reports received in 7 days
2. Arrivalweight 1094.39.4 of 10 pointsMaryland median 94.0half its reports arrived within 13 min
3. Continuityweight 10100.010.0 of 10 pointsMaryland median 100.0longest silence 60 min, on a schedule of one report every 20 min
4. Accuracyweight 20-19.8 of 20 points, at the medianMaryland median 99.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianMaryland median 100.0-
6. Forecast checkweight 10-9.2 of 10 points, at the medianMaryland median 92.1-

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