Mother Brook at Dedham

Ranking Statistics

247 score96.4of 100

Massachusetts median

92.1the median score of 744 stations

Scoring higher

183stations in Massachusetts

Sharing its score

2ranks 184 to 185

Points deducted

3.61.5 arrival, 1.4 forecast check, 0.6 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

SAGM3rank 183; ahead on 247 score 96.5 against 96.4

Next below

GRLM3rank 186; behind on 247 score 96.4 against 96.3

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 3598.234.4 of 35 pointsMassachusetts median 85.7165 of 168 scheduled reports received in 7 days
2. Arrivalweight 1084.88.5 of 10 pointsMassachusetts median 100.0half its reports arrived within 18 min
3. Continuityweight 10100.010.0 of 10 pointsMassachusetts median 100.0longest silence 2 h, on a schedule of one report every 60 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.