Start Position

Field Length

Field Name

Notes

1

2

State Code

3

3

County Code

6

4

Site Id

10

5

Parameter Code

‘42401’

15

2

POC

17

1

Exceptional Event Type

0 – No exceptional events

1 – Exceptional events excluded

2 – Exceptional events included

18

1

Duration Code

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

4

Number of 1-hour Observations

109

7

Highest 24-hour reading within the year

116

7

2^nd Highest 24-hour reading within the year

123

7

Highest 3-hour reading within the year

130

7

2^nd Highest 3-hour reading within the year

137

7

Highest 1-hour reading within the year

144

7

2^nd Highest 1-hour reading within the year

151

4

Number of 24-hour exceedances

155

4

Number of 3-hour exceedances

159

7

Arithmetic Mean of the 1-hour data

166

1

Annual Criteria Flag

‘*’ Indicates that summary criteria was not met.

167

3

Method Code used

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

170

1

Certification Indicator

Based on the certification of the 1-hour data

171

4

Reporting Organization Code

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