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 anomalies1.37
After quality control1.34
After breakpoint alignment1.28
Regional expectation during same months1.22 ± 0.19
National average during same months 1.49 ± 0.25
Global land average during same months 1.26 ± 0.05

Regional Consistency

Comparison of monthly mean station data to regional expectation

Typical Difference
(°C, 95% range)
Correlation
(R value)
Raw Monthly Anomalies ± 3.3 0.59
After Quality Control ± 1.2 0.90
After Breakpoint Adjustment ± 1.2 0.90

Quality Control Summary

Months missing 10 or more days 105
Serially repeated daily or monthly values 17
Extreme local outliers 8
Regional climatology outliers 103
Abrupt jumps 2
Marked as bad or manually changed by source 0
Exceeds global climatological range 0
Isolated observations 1
Frame shift repetitions 0
TMAX / TMIN inconsistency 0
TAVG outside TMAX / TMIN range 0
Total Observations Rejected by Quality Control 183

Station ID Codes

GHCNDMR000001497
GHCNDMR000061497
GHCNM12861497000
GSOD614970-99999
ICAOGQNI
USAF614970
WMO61497
WMSSC612190
WMSSC614970

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.