Ranking Statistics
247 score72.7of 100
- Alaska median
- 96.0the median score of 1,023 stations
- Scoring higher
- 972stations in Alaska
- Sharing its score
- 6ranks 973 to 978
- Points deducted
- 27.314.6 reports received, 6.6 arrival, 6.1 continuity
- Counted at the median
- Accuracy, instrument checks, forecast checknot measured at this station; Alaska median 100.0, 100.0, 100.0
- Next above
- PAGSrank 972; ahead on 247 score 72.8 against 72.7
- Sharing its rank
- 5other 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.
- Reports receivedweight 3558.220.4 of 35 pointsAlaska median 98.8326 of 560 scheduled reports received in 7 days
- Arrivalweight 1034.13.4 of 10 pointsAlaska median 86.1half its reports arrived within 43 min
- Continuityweight 1038.83.9 of 10 pointsAlaska median 100.0longest silence 6.3 h, on a schedule of one report every 18 min
- Accuracyweight 20-20.0 of 20 points, at the medianAlaska median 100.0-
- Instrument checksweight 15-15.0 of 15 points, at the medianAlaska median 100.0-
- Forecast checkweight 10-10.0 of 10 points, at the medianAlaska median 100.0-
The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.
How each part is scored
- Reports received
- Full marks for every scheduled report received, none for none, in proportion between
- Arrival
- Full marks for a median arrival within 10 min, none at 60 min
- Continuity
- Full marks for a longest silence of 3 reports or less (54 min), none for 72 (21.6 h)
- Accuracy
- Full marks within 1.5 °F of its reference, typically, none beyond 8.0 °F
- Instrument checks
- Full marks for no reading failed, none for 5 per cent or more
- Forecast check
- Full marks within 2 °F of the forecast on average, none at 8 °F
The reports received are counted from the network's own archive of this station's reports. Its 247 rank is counted from Storm Station's own record, which holds less than 7 days of it so far: 326 of 560 scheduled reports received, 58.2%.