| OKLAHOMA CARBON MONOXIDE | ||||
| Highest 8 Hour Averages as of 12/26/02 | ||||
| PPM | ||||
| Site | 1999 | 2000 | 2001 | 2002 |
| 1st 2nd | 1st 2nd | 1st 2nd | 1st 2nd | |
| Tulsa | 3.5 3.0 | 3.3 3.0 | 4.1 3.5 | 2.8 2.7 |
| Site 191 | 11/11 1/17 | 11/28 11/3 | 1/6 11/16 | 8/27 8/26 |
| Tulsa | 3.9 3.5 | 3.8 3.7 | 5.5 4.1 | 3.2 2.9 |
| Site 126 | 11/16 10/26 | 2/7 11/28 | 1/6 12/7 | 2/2 2/17 |
| OKC | 4.6 4.2 | 4.2 4.1 | 4.2 3.4 | 3.3 2.7 |
| Site 047 | 11/16 11/11 | 2/7 11/28 | 1/15 11/5 | 1/15 12/26 |
| OKC | 3.1 2.9 | 3.2 3.1 | 2.5 2.4 | 2.9 2.4 |
| Site 025 | 11/27 11/10 | 11/28 1/30 | 12/1 1/15 | 2/1 12/26 |
| Moore | 2.7 2.2 | 2.8 1.9 | 1.7 1.5 | 1.9 1.7 |
| Site 049 | 11/16 11/20 | 11/30 1/30 | 1/15 1/22 | 2/2 2/17 |
| Lawton | 1.7 1.6 | 1.4 1.3 | 2.4 2.1 | 2.3 2.1 |
| Site 647 | 4/4 1/11 | 12/15 12/7 | 1/4 12/2 | 12/15 12/14 |