6 Summary

The analysis described above is centered on data which define a zero point. Enough of those data are found to allow the analysis to proceed. Data that are not zero-point data are corrected and added to the overall data base in a step-by-step process. Only an acceptably small number of data cannot be included in this process. As it proceeds, values of $\sigma_0$ are determined by data comparisons. For the most part, the resulting values of $\sigma_0$ lie between 0.10 and 0.12 dex. These errors appear to be too large to be explained by line-to-line scatter and temperature effects.

Acknowledgements

I thank Mike and Lisa Joner for carefully proofreading this paper. Page charges for this and the other papers in this series have been generously underwritten by the College of Physical and Mathematical Sciences and the Physics and Astronomy Department of Brigham Young University.