9. The output parameter estimation apparatus of claim 8, wherein the estimation accuracy judgement means includes base value acquisition means for acquiring an accurately estimated output parameter value as the base value corresponding to the input data set from outside.
9. The output parameter estimation apparatus of claim 8, wherein the estimation accuracy judgement means includes base value acquisition means for acquiring an accurately estimated output parameter value as the base value corresponding to the input data set from outside. 11. The output parameter estimation apparatus of claim 9, wherein the estimation accuracy judgement means judges the estimation accuracy for each field by calculating a total value for a plurality of difference values obtained within an estimation accuracy judgement period, the plurality of difference values each being a difference between an output parameter value and a corresponding base value.