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Data Validation and Charting for Aerosol Sulfate Measurements

This document outlines the definitions and formulas used for validating aerosol sulfate (SO4) data. The sulfate concentration is represented as SO4fVal, and sulfur is denoted as SfVal. The Z-score is calculated using the formula Z.Score = ([SO4] - 3*[S]) / √(σSO4² + (3*σS)²), where σSO4 and σS represent the reported uncertainties for sulfate and sulfur, respectively. All measurements are given in µg/m³, with values below the minimum detection limit (mdl) highlighted in red.

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Data Validation and Charting for Aerosol Sulfate Measurements

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  1. Data Validation Charts for Aerosol Sulfate Definitions: Sulfate: SO4fVal = [SO4] Sulfur: SfVal = [S] Z Score = ([SO4] -3*[S])/√(σSO42+(3* σS)2) Where σSO4 = Reported [SO4] uncertainty σS = Reported [S] uncertainty All concentrations in units of ug/m3 Values below mdl are shown in red

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