DQRs for Session: 186069 User:zhengg1Completed: 06-08-2017

Data Quality Reports for Session: 186069 User: zhengg1 Completed: 06/08/2017

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected	Data Quality Metric
D170428.3	ENA/HTDMA/NEPHELOMETER/C1 - Dry air supply failing	enaaoshtdmaC1.a1	Suspect
D170428.9	ENA/HTDMA/NEPHELOMETER/C1 - Dry air supply high RH	enaaoshtdmaC1.a1	Suspect
D170519.7	ENA/HTDMA/NEPHELOMETER/C1 - No dry air	enaaoshtdmaC1.a1	Does not affect quality

DQRID : D170428.3

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/25/2017	1100	04/26/2017	1200	Suspect

Subject:	ENA/HTDMA/NEPHELOMETER/C1 - Dry air supply failing
DataStreams:	enaaoshtdmaC1.a1
Description:	Pentras dry air generator failing and offline for maintenance. Dry air supply to HT-DMA and humidigraph/nephelometers affected. Instruments working well, but with dry RH of around 30% instead <5%.
Measurements:	enaaoshtdmaC1.a1: scan_min_diameter_setting scan_time_setting scan_max_diameter_setting dry_rh_setting Concentration of aerosol(aerosol_concentration) dry_diameter_setting bin_width bin_center atomizer Total concentration(total_concentration) scan_type num_bins humid_rh bin sample_flow

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DQRID : D170428.9

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/26/2017	1100	04/28/2017	0810	Suspect

Subject:	ENA/HTDMA/NEPHELOMETER/C1 - Dry air supply high RH
DataStreams:	enaaoshtdmaC1.a1
Description:	Humidigraph valve o-ring broken and valve stuck after o-ring replacement. Dry and humid air mixing. Instruments working well, except dry air RH different than nominal. HT-DMA affected, as well, as it is using the same dry air source.
Measurements:	enaaoshtdmaC1.a1: scan_min_diameter_setting scan_time_setting scan_max_diameter_setting dry_rh_setting Concentration of aerosol(aerosol_concentration) dry_diameter_setting bin_width bin_center atomizer Total concentration(total_concentration) scan_type num_bins humid_rh bin sample_flow

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DQRID : D170519.7

Start Date	Start Time	End Date	End Time	Data Quality Metric
05/19/2017	0200	05/19/2017	1015	Does not affect quality

Subject:	ENA/HTDMA/NEPHELOMETER/C1 - No dry air
DataStreams:	enaaoshtdmaC1.a1
Description:	Dry air supply not working. Data quality unaffected, instruments just working with RH different from the nominal.
Measurements:	enaaoshtdmaC1.a1: scan_min_diameter_setting scan_time_setting scan_max_diameter_setting dry_rh_setting Concentration of aerosol(aerosol_concentration) dry_diameter_setting bin_width bin_center atomizer Total concentration(total_concentration) scan_type num_bins humid_rh bin sample_flow

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