ppgf: Persistent Pollution Generation Factor
Variable
Persistent pollution sector
Persistent Pollution Generation Factor [Dmnl]
ppgf = clip ( ppgf1 , ppgf2 , pyear , time)

ppgf in the updating graph: ( how to read )
In nodes
ppgf1 : persistent pollution generation factor 1
ppgf2 : persistent pollution generation factor 2
pyear : POLICY YEAR
Out nodes
icormpt : industrial capital output ratio multiplier from pollution technology
plinid : persistent pollution intensity industry
ppgr : persistent pollution generation rate