Sangamon River at Petersburg

Ranking Statistics

247 score96.7of 100

Illinois median

95.9the median score of 1,393 stations

Scoring higher

629stations in Illinois

Sharing its score

15ranks 630 to 644

Points deducted

3.32.4 arrival, 0.5 forecast check, 0.4 reports received

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Illinois median 100.0, 100.0, 94.7

Next above

WHSI2rank 636; ahead on median arrival 21 min 36 s against 21 min 52 s

Next below

NBOI2rank 645; behind on 247 score 96.7 against 96.6

Sharing its rank

2other 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 3598.834.6 of 35 pointsIllinois median 99.1166 of 168 scheduled reports received in 7 days
2. Arrivalweight 1076.37.6 of 10 pointsIllinois median 96.3half its reports arrived within 22 min
3. Continuityweight 10100.010.0 of 10 pointsIllinois median 100.0longest silence 2 h, on a schedule of one report every 60 min
4. Accuracyweight 20-20.0 of 20 points, at the medianIllinois median 100.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianIllinois median 100.0-
6. Forecast checkweight 10-9.5 of 10 points, at the medianIllinois median 94.7-

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