---
kind: "section"
citation: "40 C.F.R. § 60.3042"
title: "40"
number: "60.3042"
heading: "How do I convert my 1-hour arithmetic averages into the appropriate averaging times and units?"
url: "https://uscodex.org/cfr/40/60.3042"
---

# §60.3042. How do I convert my 1-hour arithmetic averages into the appropriate averaging times and units?

- (a) Use Equation 1 in [§ 60.3076](/cfr/40/60.3076.md) to calculate emissions at 7 percent oxygen.
- (b) Use Equation 2 in [§ 60.3076](/cfr/40/60.3076.md) to calculate the 12-hour rolling averages for concentrations of carbon monoxide.

## Notes

### Source

Source: 70 FR 74907, Dec. 16, 2005, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.