Pembina River at Walhalla

Ranking Statistics

247 score67.8of 100

North Dakota median

94.3the median score of 312 stations

Scoring higher

305stations in North Dakota

Sharing its score

1no other station

Points deducted

32.216.9 reports received, 8.2 continuity, 5.4 arrival, 1.8 forecast check

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; North Dakota median 100.0, 100.0, 82.5

Next above

N1ULCrank 305; ahead on 247 score 72.5 against 67.8

Next below

BREN8rank 307; behind on 247 score 67.8 against 65.8

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 3551.818.1 of 35 pointsNorth Dakota median 98.287 of 168 scheduled reports received in 7 days
2. Arrivalweight 1046.04.6 of 10 pointsNorth Dakota median 86.7half its reports arrived within 37 min
3. Continuityweight 1018.51.9 of 10 pointsNorth Dakota median 100.0longest silence 40 h, on a schedule of one report every 60 min
4. Accuracyweight 20-20.0 of 20 points, at the medianNorth Dakota median 100.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianNorth Dakota median 100.0-
6. Forecast checkweight 10-8.3 of 10 points, at the medianNorth Dakota median 82.5-

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