Start Position

Field Length

Field Name

Notes

1

2

State Code

3

3

County Code

6

4

Site Id

10

5

Parameter Code

‘44201’

15

2

POC

17

1

Exceptional Event Type

0 – No exceptional events

1 – Exceptional events excluded

2 – Exceptional events included

18

1

Duration Code

1 – 1 Hour

19

4

Year

23

3

Unit Code

26

2

EPA Region Code

28

3

Air Quality Control Region code

31

4

Metropolitan Statistical Area code

35

4

Urban Area code

39

5

FIPS City Code

44

40

Address

84

10

Latitude

Degrees of latitude expressed in +/- DD.DDDDDD

94

11

Longitude

Degrees of longitude expressed in +/- DDD.DDDDDD

105

3

Number of valid days

108

4

Required Number of Days

112

7

Highest 1-hour reading within the year

119

7

2^nd Highest 1-hour reading within the year

126

7

3^rd Highest 1-hour reading within the year

133

7

4^th Highest 1-hour reading within the year

140

4

Number of measured 1-hour exceedances

144

7

Number of estimated exceedances

149

3

Number of missing days assumed to be less than the standard

152

3

Method Code used

‘000’ indicates that more than 1 method was used for the year

155

1

Certification Indicator

Based on the certification of the 1-hour data

156

4

Reporting Organization Code

The agency that was defined as the "Reporting Organization" at the beginning of the year for the monitor.