convergence

conv.nTotalIoniz
number of times bottom ionization routine called in this iteration,
this is == zero the very first call in this iteration

conv.nPres2Ioniz
number of times bottom ionization routine called in this zone

search phase
conv.lgSearch

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criteria are set with set convergence commands

set eden convergence
	conv.EdenErrorAllowed
	default 0.01

set temperature convergence
	conv.HeatCoolRelErrorAllowed
	default 0.02

set pressure convergence
	conv.PressureErrorAllowed
	default 0.01

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