Temperature Monitoring Station:
TORONTO LESTER B. PEARSON INT'L A, ONT

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		2.04
After quality control		2.03
After breakpoint alignment		1.34
Regional expectation during same months		1.36 ± 0.10
National average during same months		1.69 ± 0.08
Global land average during same months		1.33 ± 0.06

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 1.4	0.93
After Quality Control	± 1.4	0.93
After Breakpoint Adjustment	± 1.2	0.95

Quality Control Summary

Months missing 10 or more days	1
Serially repeated daily or monthly values	4
Extreme local outliers	0
Regional climatology outliers	0
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	5

Station ID Codes

FAA	CYYZ
GHCND	CA006158733
GHCNM	40371624000
GSOD	716240-94791
GSOD	716240-99999
ICAO	CYYZ
NCDC	20028661
USAF	716240
WBAN	94791
WMO	71624
WMSSC	716240
WWR	71624

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.