OKLAHOMA CARBON MONOXIDE
Highest 8 Hour Averages as of 12/31/03
PPM
Site	1999	2000	2001	2002	2003
	1st          2nd	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	2.3          2.2
Site 191	11/11        1/17	11/28      11/3	1/6          11/16	8/27       8/26	2/12        2/13
Tulsa	3.9           3.5	3.8           3.7	5.5         4.1	3.2         2.9	3.1         2.4
Site 126	11/16     10/26	2/7        11/28	1/6        12/7	2/2        2/17	2/12       1/3
OKC	4.6            4.2	4.2            4.1	4.2           3.4	3.3           2.7	3.4        2.8
Site 047	11/16      11/11	2/7          11/28	1/15        11/5	1/15       12/26	1/1        1/21
OKC	3.1           2.9	3.2           3.1	2.5           2.4	2.9           2.4	Site Removed
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	1.4        1.4
Site 049	11/16      11/20	11/30      1/30	1/15         1/22	2/2         2/17	1/1        1/3
Lawton	1.7           1.6	1.4           1.3	2.4          2.1	2.3          2.1	2.2       1.8
Site 647	4/4          1/11	12/15       12/7	1/4         12/2	12/15    12/14	1/4       1/8