Drawn as the kind of place it stands at. 137 instruments in Illinois stand at one.
What the snow tracker reads here
Every instrument in this state
-in
Snow on the ground
Station charts
Pecatonica River At Martintown Report
Rank 370 of 1,393 in Illinois, Oct 16. The 247 rank orders a state's stations by their 247 score out of 100: how reliably they report, how accurate their readings are against a reference station, how their readings pass their checks, and how they stand against the forecast.
Ranking Statistics
247 score98.9of 100
Illinois median
95.9the median score of 1,393 stations
Scoring higher
368stations in Illinois
Sharing its score
30ranks 369 to 398
Points deducted
1.10.6 arrival, 0.5 forecast check
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Illinois median 100.0, 100.0, 94.7
05531300rank 390; behind on median arrival 12 min 48 s against 12 min 49 s
Sharing its rank
19other 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 35100.035.0 of 35 pointsIllinois median 99.1168 of 168 scheduled reports received in 7 days
Arrivalweight 1094.49.4 of 10 pointsIllinois median 96.3half its reports arrived within 13 min
Continuityweight 10100.010.0 of 10 pointsIllinois median 100.0longest silence 62 min, on a schedule of one report every 60 min
Accuracyweight 20-20.0 of 20 points, at the medianIllinois median 100.0-
Instrument checksweight 15-15.0 of 15 points, at the medianIllinois median 100.0-
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.
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 (3 h), none for 72 (72 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
At 757 ft above sea level, 3 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.11 inHg and the temperature at 56.3 F.
On Oct 16 the noon sun stands 38 degrees above the horizon at 42.51 N, and the day is 10 h 53 min long. Level ground there takes 62 per cent of the noon sunlight a surface facing the sun would.