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 anomalies0.37
After quality control-1.28
After breakpoint alignment0.33
Regional expectation during same months0.28 ± 0.30
National average during same months 0.33 ± 0.27
Global land average during same months 0.79 ± 0.07

Regional Consistency

Comparison of monthly mean station data to regional expectation

Typical Difference
(°C, 95% range)
Correlation
(R value)
Raw Monthly Anomalies ± 2.0 0.29
After Quality Control ± 0.8 0.67
After Breakpoint Adjustment ± 0.5 0.82

Quality Control Summary

Months missing 10 or more days 145
Serially repeated daily or monthly values 36
Extreme local outliers 24
Regional climatology outliers 18
Abrupt jumps 0
Marked as bad or manually changed by source 0
Exceeds global climatological range 0
Isolated observations 17
Frame shift repetitions 0
TMAX / TMIN inconsistency 0
TAVG outside TMAX / TMIN range 0
Total Observations Rejected by Quality Control 171

Station ID Codes

GHCNDGB000004552
GHCNDGB000064552
GHCNM11864552000
GSOD645520-99999
HADCRU645520
ICAOFOOM
USAF645520
WMO64552
WMSSC645520

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.