Temperature Monitoring Station:
BOSTON LOGAN INT'L ARPT

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		0.88
After quality control		0.82
After breakpoint alignment		0.44
Regional expectation during same months		0.53 ± 0.24
National average during same months		0.60 ± 0.17
Global land average during same months		0.42 ± 0.18

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 2.5	0.78
After Quality Control	± 2.5	0.79
After Breakpoint Adjustment	± 2.0	0.84

Quality Control Summary

Months missing 10 or more days	1
Serially repeated daily or monthly values	1
Extreme local outliers	0
Regional climatology outliers	15
Abrupt jumps	3
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	19

Station ID Codes

COOP	190770
COOP	190775
FAA	BOS
GHCND	USW00014739
GHCND	USW00094701
GHCNM	42572509000
GSOD	725090-14739
GSOD	994971-99999
GSOD	999999-94701
HADCRU	725090
ICAO	BHBM3
ICAO	KBOS
NCDC	20009288
NCDC	20009289
NWS	BOS
USAF	725090
USAF	994971
WBAN	14739
WBAN	94701
WMO	72509
WMSSC	725090
WWR	72509

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.