Temperature Monitoring Station:
SPRINGFIELD/CAPITAL, IL.

Monthly Mean Temperature Data

Raw Data relative to Expected Monthly Means

Difference from Regional Expectation

Breakpoint Adjusted Annual Average Comparison

Mean Rate of Change ( °C / Century )

Raw monthly anomalies		0.21
After quality control		0.20
After breakpoint alignment		0.82
Regional expectation during same months		0.86 ± 0.16
National average during same months		0.93 ± 0.12
Global land average during same months		1.05 ± 0.05

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 1.2	0.96
After Quality Control	± 1.2	0.96
After Breakpoint Adjustment	± 0.8	0.98

Quality Control Summary

Months missing 10 or more days	1
Serially repeated daily or monthly values	1
Extreme local outliers	0
Regional climatology outliers	0
Abrupt jumps	0
Marked as bad or manually changed by source	0
Exceeds global climatological range	0
Isolated observations	0
Frame shift repetitions	0
TMAX / TMIN inconsistency	0
TAVG outside TMAX / TMIN range	0
Total Observations Rejected by Quality Control	1

Station ID Codes

COOP	118179
COOP	118184
COOP	118186
COOP	118189
FAA	SPI
GHCND	USC00118184
GHCND	USC00118186
GHCND	USC00118189
GHCND	USW00093822
GHCNM	42572439005
GSOD	724390-93822
GSOD	999999-93822
GSOD	999999-93896
HADCRU	724390
ICAO	KSPI
NCDC	20005715
NCDC	20005731
NCDC	20005732
NCDC	30001491
NWS	SFDI2
NWS	SPI
USAF	724390
WBAN	93822
WBAN	93896
WMO	72439
WMSSC	724390
WWR	72439

ID codes may be repeated if the identification of the station changed during its history or if two different records were found to contain the same data, in which case the records would be merged.