[colterHD]

Alpha0 - cold start also can beused for over-power protection 

Alpha1 - steady operating state - full-emissions+egr operating mode below 4,000 feet.

chi2 - steady state high altitude mode above 1200M

chi3 - steady state for high altitude mode above 2400M

chi4 - non-egr + engine protection mode 

chi5 - non-egr + engine protection mode high altitude 1200M +

chi6 - non-egr + engine protection mode 2400M+

chi7 - passive regen mode

chi8,9,10 - SCR thermal managment modes, SCR warm up etc. altitude base as well

chi11 - aftertreatment fuel rate limiting

chi12 - engine protection/limp home

Chi13 - stationary regen