Potomac River at Hancock

Ranking Statistics

247 score95.1of 100

Maryland median

89.0the median score of 736 stations

Scoring higher

266stations in Maryland

Sharing its score

9ranks 267 to 275

Points deducted

4.93.5 arrival, 0.8 forecast check, 0.4 reports received, 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

RSPM2rank 266; ahead on 247 score 95.2 against 95.1

Next below

SRVM2rank 269; behind on median arrival 27 min 32 s against 27 min 33 s

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 3598.834.6 of 35 pointsMaryland median 82.1166 of 168 scheduled reports received in 7 days
2. Arrivalweight 1064.96.5 of 10 pointsMaryland median 94.0half its reports arrived within 28 min
3. Continuityweight 10100.010.0 of 10 pointsMaryland median 100.0longest silence 2 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.