Colorado River near Grand Canyon Village

Ranking Statistics

247 score96.5of 100

Arizona median

91.5the median score of 1,869 stations

Scoring higher

525stations in Arizona

Sharing its score

30ranks 526 to 555

Points deducted

3.52.0 arrival, 0.7 accuracy, 0.6 forecast check, 0.2 reports received

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Arizona median 96.5, 100.0, 93.8

Next above

PVSA3rank 529; ahead on longest silence 105 min against 120 min

Next below

ALRA3rank 555; behind on reports received 99.4% against 98.8%

Sharing its rank

21other 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 3599.434.8 of 35 pointsArizona median 85.7167 of 168 scheduled reports received in 7 days
2. Arrivalweight 1080.48.0 of 10 pointsArizona median 79.1half its reports arrived within 20 min
3. Continuityweight 10100.010.0 of 10 pointsArizona median 100.0longest silence 2 h, on a schedule of one report every 60 min
4. Accuracyweight 20-19.3 of 20 points, at the medianArizona median 96.5-
5. Instrument checksweight 15-15.0 of 15 points, at the medianArizona median 100.0-
6. Forecast checkweight 10-9.4 of 10 points, at the medianArizona median 93.8-

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