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FHWA and EPA National Near-Road Study Las Vegas

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

12/15/2009 thru end-of-study in LV

12/15/2009

12/15/2010

 

end-of-study 12/15/2010

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 ±90.0º 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

 

12/15/2009

1/15/2010

   

81

time

   

Time of Sample

 

12:00:01 AM

11:59:00 PM

   

82

location

   

Location of Sample

Station Id

Station1 Station2 Station3 Station4

   
                   
 

Sound

SoundLevel

db

 

Sound level in decibels

40

120

   

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 – PM2.5

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: 05/21/2013
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