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FHWA and EPA National Near-Road Study - Detroit

23 Appendix - Integrated Sample Data - PM Filters

SAS Dataset (Not available online.)

The table is a summary of all of the samples collected between September 29, 2010 thru June 20, 2011.

September 29, 2010 thru June 20, 2011
Sample Type # of Samples % by Sample Type # of Samples w/ No Sample Collection Errors/Warnings (Flag_PM = 0) % of Samples w/ No Sample Collection Errors/Warnings (Flag_PM = 0) # of Samples w/ Sample Collection Errors/Warnings (Flag_PM = 1,4) % of Samples w/ Sample Collection Errors/Warnings (Flag_PM = 1,4)
Field Blank 19 17 19 100 0 0
Field Duplicates 19 17 17 89 2 11
Samples 76 67 71 93 5 7
Total 114 107   7  

Note: invalid data may be due to instrument malfunction, torn filter, or other similar factor.

The following is a list of the variables in the PM2.5 data set.

id = station identification SampleType = Sample, Field Duplicate, Field Blank, Date = Date Sample Collected Flag_PM = 0 or 1; 0 = valid data; 1 = invalid data location = Upwind, 10 meter, 100 meter, 300 meter PM2_5mg_m3 = PM2.5 in µg/m3

Updated: 6/28/2017
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