FHWA and EPA National Near-Road Study - Detroit

15 Appendix - Data Dictionary - Parameters, Descriptions/Labels.

Parameters, descriptions/labels - Min/Max Ranges
						range
variable location	SAS variable name	column label from WinCollect	unit from WinCollect	description from WinCollect	Labels	Min	Max	other requirements	comments
1	ID			Station id	Station Id	Station1 Station2 Station3 Station4
2	DateTime			Date and time of sample	09/29/2010 thru end-of-study in Detroit	09/29/2010	06/20/2011		end-of-study 06/20/2010
3	RT	RT	C	RT	rack temperature	10	40
4	O_Vref	O Vref	V	0 Voltage ref	0 voltage reference	0	0
5	Vref	5 Vref	V	5 Voltage ref	5 voltage reference	5	5.1
6	NO	NO	ppb	Nitrogen Oxide	Nitrogen Oxide	0	400
7	NO2	NO2	ppb	Nitrogen Dioxide	Nitrogen Dioxide	-10	500
8	NOx	NOx	ppb	Oxides of Nitrogen	Oxides of Nitrogen	-10	1000
9	NOx_Flow	NOx Flow	Lpm	NOx Flow	NOx Flow	0.5	0.65
10	NOx_Pres	NOx Pres	Torr	NOx Pressure	NOx Pressure	140	160
11	CO	CO	ppm	Carbon Monoxide	Carbon Monoxide	0	100
12	CO_Flow	CO Flow	Lpm	CO Flow	CO Flow	0.85	1
13	CO_Chass	CO Chass	C	CO Chassis Temp	CO Chassis Temp	25	50
14	PM10	PM10	µg/m³	Particulate PM 10	TEOM Particulate PM 10	0	700
15	PM2_5	PM2.5	µg/m³	PM2.5	TEOM Particulate PM2.5	0	200
16	PM_Coars	PM Coars	µg/m³	PM Coarse	TEOM Particulate PM Coarse	0	600
17	TEOM_Sta	TEOM Sta	Status	TEOM Status	TEOM Status	0			operating normally
18	TEOM_Op	TEOM Op	Mode	TEOM Operatng	TEOM Operating Mode	4			operating normally
19	Filter_A	Filter A	%	FilterLoad A	TEOM Filter Loading on Filter A	0	100
20	Filter_B	Filter B	%	Filter Load B	TEOM Filter Loading on Filter B	0	100
21	Mflow_A	Mflow A	Lpm	Mass flow A	TEOM Mass Flow A	2	4
22	MFlow_B	MFlow B	Lpm	Mass Flow B	TEOM Mass Flow B	1	2.5
23	VFlow_A	VFlow A	Lpm	Vol Flow A	TEOM Volumetric Flow A	1.5	4
24	VFlow_B	VFlow B	Lpm	Vol Flow B	TEOM Volumetric Flow B	2	3.5
25	MFlowBy	MFlowBy	Lpm	Mass Flow Bypass	TEOM Mass Flow Bypass	10	14
26	VFlowBy	VFlowBy	Lpm	Vol Flow Bypass	TEOM Volumetric Flow Bypass	10	15
27	TEOM_Vac	TEOM Vac	atm	TEOM Vaccuum	TEOM Vaccuum	0.25	0.5
28	Noise_A	Noise A		Noise A	TEOM Noise A	0	0.5
29	Noise_B	Noise B		Noise B	TEOM Noise B	0	1
30	FreqA	FreqA	Hz	Frequency A	TEOM Frequency A	230	280
31	FreqB	FreqB	Hz	Frequency B	TEOM Frequency B	210	270
32	TEOM_AT	TEOM AT	C	TEOM air temp	TEOM Air Temperature	-20	50
33	TEOM_RH	TEOM RH	%	TEOM RH	TEOM Relative Humidity	0	100
34	TEOM_BP	TEOM BP	atm	TEOM BP	TEOM Barometric Pressure	0.8	1
35	Dew_Poin	Dew Poin	C	Dew Point	TEOM Dew Point	-20	30
36	Aeth	Aeth	µg/m³	Aethalometer	Aethalometer	0	60
37	U	U	m/s	U	Orthogonal u wind velocity/direction	-20	20		u-axis aligned east-west
38	V	V	m/s	V	Orthogonal v wind velocity/direction	-20	20		v-axis aligned north-south
39	W	W	m/s	W	Orthogonal w wind velocity/direction	-20	20		w-axis updraft
40	Azimuth	Azimuth	Deg	Azimuth	Wind Direction in the U-V Plane	0	360
41	D_WS	2D WS	m/s	2D WS	Wind Speed in the U-V Plane	0	30
42	D_WS0	3D WS	m/s	3D WS	Wind Speed in 3-dimensional space	0	30
43	Elevatio	Elevatio	ded	Elevatio	ELEVATION is the ±90.0° wind elevation angle relative to the u-v plane	-20	90
44	SOS	SOS	m/s	SOS	Speed of sound	330	360
45	Sonic_T	Sonic T	C	Sonic Temperature	SOS derived from sonic temperature	-20	50
46	Young_Er	Young Er		Young Error	Error Code Field	0
47	RT_F	RT-F	F	Rack temp	Rack temperature	55	100
48	D_WS_V	2D WS-V	m/s	2D WS-Vector	Wind Speed in the U-V Plane	0	60
49	D_WD_V	2D WD-V	Deg	2D WD-Vector	Wind Direction in the U-V Plane	0	360
50	D_Sigma	2D Sigma		2D Sigma	Standard Deviation in the U-V Plane	0	120
51	D_WS_V0	3D WS-V	m/s	3D WS-Vector	Wind Speed in 3-dimensional space	0	15
52	D_WD_V0	3D WD-V	Deg	3D WD-Vector	Wind Direction in 3-dimensional space	0	360
53	D_Sigma0	3D Sigma		3D Sigma	Standard Deviation in 3-dimensional space	0	120
54	GasCal_S	GasCal S		GasCal Status	Zero Gas Calibration Status (pressure - psi)	0	10
58	Vaisala	Vaisala	C	Vaisala Air temp	Vaisala Air Temperature	-30	45
59	Vaisala_1	Vaisala	%	Vaisala RH	Vaisala Relative Humidity	0	100
60	RG	RG	mm	Rain Gauge	Ecotech Rain Gauge	0	150
61	SR	SR	W/m²	Solar Radiation	Solar Radiation	0	2000		Negative values occur at night
80	date			Date of sample		09/29/2010	06/15/2011
81	time			Time of Sample		12:00:01 AM	11:59:00 PM
82	location			Location of Sample	Station Id	Station1 Station2 Station3 Station4

Integrated Samples - VOC

Variables for VOC Data (samples collected using Summa Canisters: Method TO-15):

id = station1, station2, station3, station4

location = 10 meter, 100 meter, 300 meter, Upwind

SampleType = Field Blank, Field Control, Field Duplicate, Lab Duplicate, Sample

SampleDateTime = Date and Time of Sample

Buta_ppb = 1,3-Butadiene (ppb)

Benz_ppb = Benzene (ppb)

Acrolein_ppb = Acrolein (ppb)

Flag_VOC = 0 or 1; 0 = valid data; 1 = invalid data (relates to the entire sample, across all pollutants)

Flag_Buta = 0 or 1; 0 = valid data; 1 = invalid data

Flag_Benz = 0 or 1; 0 = valid data; 1 = invalid data

Flag_Acrolein = 0 or 1; 0 = valid data; 1 = invalid data

Integrated Samples - Carbonyl

Variables for Carbonyl Data (samples collected using cartridges: Method TO-11A):

id = station1, station2, station3, station4

location = 10 meter, 100 meter, 300 meter, Upwind

SampleType = Field Blank, Field Control, Field Duplicate, Lab Duplicate, Sample

SampleDateTime = Date and Time of Sample

Acetaldehyde_ppb = Acetaldehyde (ppb)

Acrolein_ppb = Acrolein (ppb)

Formaldehyde_ppb = Formaldehyde (ppb)

Acetaldehyde_detect '<' (below method detection limit)

Acrolein_detect '<' (below method detection limit)

Formaldehyde_detect '<' (below method detection limit)

Flag_Carbonyl = 0 or 1; 0 = valid data; 1 = invalid data (relates to the entire sample, across all pollutants)

Flag_Acetaldehyde = 0 or 1; 0 = valid data; 1 = invalid data

Flag_Acrolein = 0 or 1; 0 = valid data; 1 = invalid data

Flag_Formaldehyde = 0 or 1; 0 = valid data; 1 = invalid data

Integrated Samples - PM_2.5

The following is a list of the variables in the PM_2.5data 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