How to read the IM240 emission dynamometer test results.

The left side of the spreadsheet represents the Before the device was installedds. The right side of the spreadsheet represents the After the device was installed.

Starting from the left: 

• The 1st column is the spreadsheet line number. 
• The 2nd column (A) the "Seconds" column displays the number of seconds the test has run. 
• The 3rd column (B) the CO2 column displays the ppm (parts per million) of Carbon Dioxide being released from the vehicle at that specific econd of the test. 
• The 4th column (C) the HC column displays the ppm (parts per million) of Hydro Carbons being released from the vehicle at that specific second of the test. 
• The 5th column (D) the CO column displays the ppm (parts per million) of Carbon Monoxide being released from the vehicle at that specific second of the test. 
• The "Speed" refers to the speed the vehicle would be traveling at if on the road at that specific second based on the wheel spin rpm on the emission dynamomoter