Unnamed Tributary AT Lake Arbor Tailwater

Ranking Statistics

247 score81.8of 100

Maryland median

89.0the median score of 736 stations

Scoring higher

513stations in Maryland

Sharing its score

3ranks 514 to 516

Points deducted

18.28.1 reports received, 7.6 continuity, 1.5 arrival, 0.8 forecast check, 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

W4RAH-1rank 513; ahead on 247 score 81.9 against 81.8

Next below

EW2809rank 515; behind on reports received 76.7% against 59.3%

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 3576.826.9 of 35 pointsMaryland median 82.1129 of 168 scheduled reports received in 7 days
2. Arrivalweight 1084.98.5 of 10 pointsMaryland median 94.0half its reports arrived within 18 min
3. Continuityweight 1024.52.5 of 10 pointsMaryland median 100.0longest silence 33 h, on a schedule of one report every 60 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.