Thanks for the answer Johnr_j,

well probably my english is not the best, but my post is about gas emissions. I have to determine the amount of CO emissions of all forklifts. This is mandotory to the company determine the amount of carbon is necessary to put the product in the clients hands.

So my big problem is that my only data from the forklifts is hours worked ( stall, idle and elevation ), and i don't have from Hyster a conversion table that i have could aply to like example : if the forklift A have 1000 hours idle, 50 stall and 200 elevations along April Month, had 2400 g CO emission, 200 g NOX emission and so on.