CKUNAK AIR ¨PRO cO-LOCATION FIELD STUDY

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CKUNAK AIR ¨PRO cO-LOCATION FIELD STUDY

Product catalog summary

Test Procedure

Installation: Devices are installed on top of Air Quality Stations (AQS) at a height of 3-4 meters.
Stabilization Time: 2 days are required for stabilization.
Calibration Procedure: No calibration is performed; initial calibration is maintained throughout the tests.
Post-Processing: Real corrected data is calculated directly in the device without delay, and no re-calibrations or corrections are applied unless specified.
Sampling Period: Data is averaged every hour to align with reference station data.
Data Usage: 100% of KUNAKAIR data is used, including outliers.
Validation: Statistics are calculated only if valid reference data is available.

Analysis and Characterization Procedure

Accuracy: Measured as the mean absolute error (MAE) between KUNAKAIR and reference instruments.
90% Confidence Interval: 90% of measurements fall below this error, with relative error of the maximum error shown.
Relative Expanded Uncertainty: Calculated using a specific formula.
Data Quality Objective (DQO): Concentration value from which DQO defined in the EU Air Quality Directive is met.
Availability: Defined as the number of 1-hour averaged samples sent by the device divided by the number of hours in the month.
Results: Include average concentrations during tests, with various plots used for analysis.
Field Test Main Objectives: Evaluate KUNAKAIR V3 device performance against reference equipment over different seasons.

Results Summary

Location: Mexico City, May-August 2019.
Correlation: R² = 0.95, indicating strong correlation between KUNAKAIR and reference data.
Accuracy: 45.18 ppb.
90% Confidence Interval: 90.20 ppb.
Relative Expanded Uncertainty: 10.57%.
Average Concentrations: Reference: 456.78 ppb, Device Under Test (DUT): 470.19 ppb.
Availability: 99.4% for reference, 100% for DUT.

Catalog excerpts

CKUNAK AIR ¨PRO cO-LOCATION FIELD STUDY-1

Red de control de la calidad del aire CO-LOCATION FIELD STUDY

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CKUNAK AIR ¨PRO cO-LOCATION FIELD STUDY-2

Test procedure kunak SENSING ANYWHERE ■ POST-PROCESSING: None. Real corrected data is calculated directly in the device without any delay. No re-calibrations or corrections are applied during the field tests unless specified. Then, the initial calibration is maintained during the whole field tests and results shown in this study. ■ SAMPLING PERIOD: data is averaged every hour to match data from reference station. ■ 100% of KUNAKAIR data is used for analysis, therefore, any possible outlier is included in the statistics. ■ VALIDATION: statistics are only calculated if valid Reference Data is available....

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CKUNAK AIR ¨PRO cO-LOCATION FIELD STUDY-3

Analysis and Characterization Procedure ▪ ACCURACY: is obtained as the mean absolute error (MAE) between KUNAKAIR measurements and the reference instruments. 90% CONFIDENCE INTERVAL: the 90% of the measurements are below this error. Also, the relative error of the maximum error in the 90% of measurements is shown. RELATIVE EXPANDED UNCERTAINTY: DATA QUALITY OBJECTIVE (DQO): concentration value from which DQO defined in the EU Air Quality Directive (2008/50/EC) is met. Also, it is shown the DQ obtained for the Limit Values set in EU directive for indicative measurements. AVAILABILITY: is defined...

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CKUNAK AIR ¨PRO cO-LOCATION FIELD STUDY-4

Carbon monoxide

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CKUNAK AIR ¨PRO cO-LOCATION FIELD STUDY-5

CARBON MONOXIDE (CO), Mexico City (Mexico), MAY’19-AUG’ 19 Reference Data – CO concentration values (ppb) ReferenceData Data Reference Kunak AIR Pro 1 - CO concentration values (ppb

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CKUNAK AIR ¨PRO cO-LOCATION FIELD STUDY-6

SENSING ANYWHERE

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CKUNAK AIR ¨PRO cO-LOCATION FIELD STUDY-7

Want to know more?Contact us! ■

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