There isn't really much background here yet... I'm working on some info... Something more will be up here soon... This truly is still a page in progress.
Like my oil spectrum analysis data, I've decided to publish the data I've compiled so far as well as my graphs. The data consists of scans of the actual Vehicle Emission Test Reports plus I have everything entered into Excel 8.0 and generated a three-dimensional graph to show all the data and trends at once.
(w/ private vehicle data digitally removed)
Feb 9th, 1999 Data
Mar 27th, 1997 Data