Real Time Data from Houston, Texas on August 2, 1999
| Time of Day | Oxides of Nitrogen | Ozone | Temperature | WindSpeed |
| 7:00 AM | 61.2 | 3.53 | 82.5 | 3 |
| 8:00 AM | 36 | 6.55 | 84 | 3.8 |
| 9:00 AM | 30 | 12.75 | 85.8 | 3.3 |
| 10:00 AM | 22.6 | 26.46 | 87.4 | 4.1 |
| 11:00 AM | 17.7 | 45.53 | 88.4 | 3.4 |
| 12:00 PM | 19.5 | 54.29 | 89.2 | 3.7 |
| 1:00 PM | 19.4 | 56.18 | 90.6 | 3.5 |
| 2:00 PM | 15.3 | 65.36 | 91.8 | 3.2 |
| 3:00 PM | 14.3 | 78.64 | 92.4 | 3.5 |
| 4:00 PM | 14.5 | 84.29 | 91.6 | 4 |
| 5:00 PM | 16.9 | 64.08 | 90.6 | 3.6 |
| 6:00 PM | 16.3 | 54.26 | 89.4 | 2.5 |
| 7:00 PM | 20.8 | 37.28 | 87.2 | 1.5 |

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