Temperature Monitoring Station:
JAMESTOWN WATER WORKS

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		-0.76
After quality control		-0.60
After breakpoint alignment		1.01
Regional expectation during same months		1.09 ± 0.25
National average during same months		0.68 ± 0.16
Global land average during same months		0.81 ± 0.09

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 3.3	0.73
After Quality Control	± 2.0	0.87
After Breakpoint Adjustment	± 1.3	0.94

Quality Control Summary

Months missing 10 or more days	2
Serially repeated daily or monthly values	13
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	14

Station ID Codes

COOP	304206
COOP	304208
FAA	JHW
GHCND	USC00304206
GHCND	USC00304208
GSOD	999999-04720
ICAO	KJHW
NCDC	20019658
NCDC	20019678
NCDC	20020202
WBAN	4720

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.