Data Quality for Mesa, AZ
CWOP ID - D4174

- Choose Time Span - 3 Days 7 Days 14 Days 4 Weeks 8 Weeks 13 Weeks 26 Weeks 39 Weeks 52 Weeks Current Time Span Selected: 28 Days

Barometer Graph
Madis Value:	100%
Data Span:	28 Days
Average Barometer Error:	0.3 milliBars
Error Standard Deviation:	0.3 milliBars
Calculations/Data courtesy of Phillip Gladstone. Script courtesy of  Michael Holden of Relay Weather.

Temperature Graph
Madis Value:	99%
Data Span: 28 Days	24 Hours	Daytime	Nighttime
Average Temperature Error:	0.4 °F	-0.8 °F	1.1 °F
Error Standard Deviation:	2.2 °F	2.0 °F	1.7 °F
Calculations/Data courtesy of Phillip Gladstone. Script courtesy of  Michael Holden of Relay Weather.

Dewpoint Graph
Madis Value:	99%
Data Span: 28 Days	24 Hours	Daytime	Nighttime
Average Dewpoint Error:	-0.4 °F	-0.6 °F	-0.2 °F
Error Standard Deviation:	1.4 °F	1.3 °F	1.3 °F
Calculations/Data courtesy of Phillip Gladstone. Script courtesy of  Michael Holden of Relay Weather.

Wind
Madis Value:	97%
Calculations/Data courtesy of Phillip Gladstone. Script courtesy of  Michael Holden of Relay Weather.

weather.pmhahn.com is a proud member of the Citizen Weather Observer Program (CWOP). The above charts represent data reported to CWOP for Mesa, AZ (D4174 actuals in blue) with the predicted data based on surrounding stations (D4174 Analysis in red).

Data Quality:
The MADIS value represents the percentage of observations that have successfully passed the MADIS QC checks. If the Madis rating is within the acceptable limits, a green check will appear. Otherwise, a red x-mark will appear indicating that your data has not passed quality control.

Errors
If the above errors are POSITIVE, this means that the analysis variable is HIGHER than the reported variable. This means that your sensor is reading a variable lower than expected. If the above errors are NEGATIVE, this means that the analysis variable is LOWER than the reported variable. This means that your sensor is reading a variable higher than expected.