Temperature Monitoring Station:
SITKA MAGNETIC OBS. ALASKA U.

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		0.48
After quality control		0.50
After breakpoint alignment		0.78
Regional expectation during same months		0.88 ± 0.20
National average during same months		0.71 ± 0.28
Global land average during same months		0.84 ± 0.18

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 1.8	0.85
After Quality Control	± 1.8	0.85
After Breakpoint Adjustment	± 1.6	0.88

Quality Control Summary

Months missing 10 or more days	2
Serially repeated daily or monthly values	2
Extreme local outliers	4
Regional climatology outliers	3
Abrupt jumps	1
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	8

Station ID Codes

COOP	508494
COOP	508503
FAA	SIT
GHCND	USC00508503
GHCND	USW00025333
GHCNM	42570371000
GSOD	703710-25333
GSOD	997171-99999
GSOD	999999-25333
GSOD	999999-25334
HADCRU	703710
ICAO	ITKA2
ICAO	PASI
NCDC	20021837
NCDC	20021838
NWS	SIOA2
NWS	SIT
USAF	703710
USAF	997171
WBAN	25333
WBAN	25334
WMO	70371
WMSSC	703710
WWR	70371

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.