Grand River 1 S Portland

Ranking Statistics

247 score96.7of 100

Michigan median

95.5the median score of 979 stations

Scoring higher

383stations in Michigan

Sharing its score

15ranks 384 to 398

Points deducted

3.32.5 arrival, 0.8 forecast check

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Michigan median 100.0, 100.0, 92.3

Next above

SFRM4rank 384; ahead on longest silence 60 min against 63 min

Next below

BDGM4rank 389; behind on median arrival 22 min 36 s against 22 min 37 s

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 pointsMichigan median 98.2168 of 168 scheduled reports received in 7 days
2. Arrivalweight 1074.87.5 of 10 pointsMichigan median 96.9half its reports arrived within 23 min
3. Continuityweight 10100.010.0 of 10 pointsMichigan median 100.0longest silence 63 min, on a schedule of one report every 60 min
4. Accuracyweight 20-20.0 of 20 points, at the medianMichigan median 100.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianMichigan median 100.0-
6. Forecast checkweight 10-9.2 of 10 points, at the medianMichigan median 92.3-

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