Temperature Monitoring Station:
GRAND CANYON VISITOR CENTER

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		0.89
After quality control		0.38
After breakpoint alignment		0.91
Regional expectation during same months		0.89 ± 0.13
National average during same months		0.88 ± 0.09
Global land average during same months		1.10 ± 0.02

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 3.4	0.68
After Quality Control	± 3.1	0.70
After Breakpoint Adjustment	± 2.9	0.73

Quality Control Summary

Months missing 10 or more days	10
Serially repeated daily or monthly values	8
Extreme local outliers	10
Regional climatology outliers	32
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	42

Station ID Codes

COOP	23581
COOP	23582
COOP	23589
COOP	23591
COOP	23595
COOP	23596
FAA	4GC
GHCND	USC00023581
GHCND	USC00023582
GHCND	USC00023589
GHCND	USC00023591
GHCND	USC00023595
GHCND	USC00023596
GHCNM	42500023596
HADCRU	723780
NCDC	10100046
NCDC	10100047
NCDC	10100048
NCDC	12010003
NCDC	20001294
NCDC	30015374
NCDC	30015757
NWS	GCNA3
NWS	GCVA3
NWS	GGCA3
WBAN	23143
WBAN	93131
WMO	72378
WMSSC	723780

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.