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 anomalies1.00
After quality control1.00
After breakpoint alignment1.28
Regional expectation during same months0.93 ± 0.36
National average during same months -
Global land average during same months 1.74 ± 0.07

Regional Consistency

Comparison of monthly mean station data to regional expectation

Typical Difference
(°C, 95% range)
Correlation
(R value)
Raw Monthly Anomalies ± 0.8 0.74
After Quality Control ± 0.8 0.74
After Breakpoint Adjustment ± 0.7 0.80

Quality Control Summary

Months missing 10 or more days 1
Serially repeated daily or monthly values 2
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 0
TMAX / TMIN inconsistency 0
TAVG outside TMAX / TMIN range 0
Total Observations Rejected by Quality Control 3

Station ID Codes

COOP914025
FAAUAM
GHCNDGQC00914025
GHCNDGQW00041414
GHCNM53591218000
GSOD912180-41414
GSOD912180-99999
HADCRU912180
ICAOPGUA
NCDC20030350
NCDC20030435
NWSUAM
USAF912180
WBAN41414
WMO91218
WMSSC912180

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.