Ranking Statistics
247 score79.3of 100
- Minnesota median
- 94.4the median score of 1,963 stations
- Scoring higher
- 1,736stations in Minnesota
- Sharing its score
- 4ranks 1,737 to 1,740
- Points deducted
- 20.716.6 reports received, 3.5 continuity, 0.6 forecast check
- Counted at the median
- Accuracy, instrument checks, forecast checknot measured at this station; Minnesota median 100.0, 100.0, 93.6
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 3552.718.4 of 35 pointsMinnesota median 85.7260 of 493 scheduled reports received in 7 days
- Arrivalweight 10100.010.0 of 10 pointsMinnesota median 98.7half its reports arrived within 16 s
- Continuityweight 1065.46.5 of 10 pointsMinnesota median 100.0longest silence 3 h, on a schedule of one report every 20 min
- Accuracyweight 20-20.0 of 20 points, at the medianMinnesota median 100.0-
- Instrument checksweight 15-15.0 of 15 points, at the medianMinnesota median 100.0-
- Forecast checkweight 10-9.4 of 10 points, at the medianMinnesota median 93.6-
The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.
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 (60 min), none for 72 (24 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: 260 of 493 scheduled reports received, 52.7%.