Temperature Monitoring Station:
CHARLOTTETOWN A, PEI

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		0.67
After quality control		0.67
After breakpoint alignment		1.16
Regional expectation during same months		1.17 ± 0.17
National average during same months		1.39 ± 0.12
Global land average during same months		0.98 ± 0.05

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 1.4	0.92
After Quality Control	± 1.4	0.92
After Breakpoint Adjustment	± 1.2	0.93

Quality Control Summary

Months missing 10 or more days	1
Serially repeated daily or monthly values	1
Extreme local outliers	1
Regional climatology outliers	1
Abrupt jumps	0
Marked as bad or manually changed by source	0
Exceeds global climatological range	0
Isolated observations	0
Frame shift repetitions	18
TMAX / TMIN inconsistency	0
TAVG outside TMAX / TMIN range	0
Total Observations Rejected by Quality Control	20

Station ID Codes

FAA	CYYG
GHCND	CA008300300
GHCND	CA008300400
GHCNM	40371706000
GSOD	717060-99999
GSOD	717064-99999
GSOD	727060-99999
HADCRU	717060
HADCRU	717061
ICAO	CWYG
ICAO	CYYG
NCDC	20028733
NCDC	20028735
USAF	717060
USAF	717064
USAF	727060
WBAN	14630
WBAN	14688
WMO	71706
WMO	72706
WMSSC	717060
WWR	71706

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.