Temperature Monitoring Station:
HAGERSTOWN WASHINGTON CO AP

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		0.55
After quality control		0.49
After breakpoint alignment		0.96
Regional expectation during same months		0.99 ± 0.15
National average during same months		1.19 ± 0.11
Global land average during same months		1.19 ± 0.05

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 3.7	0.66
After Quality Control	± 1.2	0.94
After Breakpoint Adjustment	± 1.1	0.95

Quality Control Summary

Months missing 10 or more days	9
Serially repeated daily or monthly values	10
Extreme local outliers	2
Regional climatology outliers	2
Abrupt jumps	2
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	15

Station ID Codes

COOP	183975
COOP	183980
FAA	HGR
GHCND	USC00183975
GHCND	USC00183980
GHCND	USW00093706
GSOD	999999-93706
ICAO	KHGR
NCDC	20009627
NCDC	20009647
NCDC	20009660
NWS	HAGM2
NWS	HGRM2
WBAN	93706

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.