Mopar afr/lamda numbering

Hi my name is Steve. ive got a 2006 Chrysler 300 srt8 with a 427 stroker that i am trying tune for myself. my uestion is, can anyone help me make sense of the way Mopar does their fuel data? thee numbers do not make any sense as they are not in AFR and don't appear to be in Lamda. Thanks in advance for your help

If you are using HPTuners, I believe it is in equivalance ratio which means it is = 1/lambda. for example 0.8 lambda is 1.25 in equivalance ratio

Okay thank for you response. I'm not quite understanding it yet, but I'm thinking I'm just over thinking things.