Temperature Monitoring Station:
SIWA

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		2.20
After quality control		2.03
After breakpoint alignment		1.08
Regional expectation during same months		0.97 ± 0.15
National average during same months		1.08 ± 0.16
Global land average during same months		1.11 ± 0.03

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 1.9	0.75
After Quality Control	± 1.6	0.81
After Breakpoint Adjustment	± 1.3	0.84

Quality Control Summary

Months missing 10 or more days	37
Serially repeated daily or monthly values	22
Extreme local outliers	6
Regional climatology outliers	3
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	48

Station ID Codes

CA	166
GHCND	EG000062417
GHCNM	11562416001
GSOD	624160-99999
GSOD	624170-99999
USAF	624160
USAF	624170
WMO	62417
WMSSC	624170

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.