From Figure it is apparent that extrapolation to higher pressures at high temperatures is not advised. However, that same diagram shows that extrapolation to lower temperatures seems possible with only rather low errors. In the following the error measure between network for different pressures at near stoichiometric initial compositions according to . Dots and squares represent network predictions, lines conventionally obtained values and crosses experimental data . Note that some network predictions are not depicted because they lie outside of the diagram range.