Birch Branch 1 N Showell

Ranking Statistics

247 score95.5of 100

Maryland median

89.0the median score of 736 stations

Scoring higher

238stations in Maryland

Sharing its score

13ranks 239 to 251

Points deducted

4.53.5 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

BABM2rank 238; ahead on 247 score 95.8 against 95.5

Next below

394205076320201rank 241; behind on median arrival 27 min 33 s against 27 min 35 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 35100.035.0 of 35 pointsMaryland median 82.1168 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 78 min, 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.