Charles River Dam

Ranking Statistics

247 score97.0of 100

Massachusetts median

92.1the median score of 744 stations

Scoring higher

173stations in Massachusetts

Sharing its score

3ranks 174 to 176

Points deducted

3.01.4 forecast check, 1.3 arrival, 0.4 reports received

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Massachusetts median 100.0, 100.0, 85.6

Next above

422328072035300rank 175; ahead on reports received 100% against 99.0%

Next below

BATM3rank 177; behind on 247 score 97.0 against 96.9

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 3599.034.7 of 35 pointsMassachusetts median 85.7832 of 840 scheduled reports received in 7 days
2. Arrivalweight 1087.58.8 of 10 pointsMassachusetts median 100.0half its reports arrived within 16 min
3. Continuityweight 10100.010.0 of 10 pointsMassachusetts median 100.0longest silence 30 min, on a schedule of one report every 12 min
4. Accuracyweight 20-20.0 of 20 points, at the medianMassachusetts median 100.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianMassachusetts median 100.0-
6. Forecast checkweight 10-8.6 of 10 points, at the medianMassachusetts median 85.6-

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