Temperature Monitoring Station:
PORT HARCOURT NIGI PORT

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		2.34
After quality control		0.86
After breakpoint alignment		1.20
Regional expectation during same months		1.03 ± 0.25
National average during same months		1.20 ± 0.30
Global land average during same months		1.38 ± 0.09

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 1.9	0.57
After Quality Control	± 1.1	0.58
After Breakpoint Adjustment	± 1.0	0.65

Quality Control Summary

Months missing 10 or more days	95
Serially repeated daily or monthly values	12
Extreme local outliers	36
Regional climatology outliers	25
Abrupt jumps	2
Marked as bad or manually changed by source	0
Exceeds global climatological range	0
Isolated observations	13
Frame shift repetitions	1
TMAX / TMIN inconsistency	0
TAVG outside TMAX / TMIN range	0
Total Observations Rejected by Quality Control	106

Station ID Codes

GHCNM	13465250000
GSOD	652500-99999
HADCRU	652500
ICAO	DNPO
USAF	652500
WMO	65250
WMSSC	652500
WWR	65250

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.