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Up-and-Down Method Factors

I am in the process of entering Dixon and Mood's Up-and-Down Method into an Excel Spreadsheet for performing sensitivity analysis.  I'm not finding a table value for the G factor that is multiplied by the population standard deviation and divided by the square root of N to arrive at the standard error of the estimate on page 115 of the article.

The handwritten document I'm working off of multiplies the standard error of the mean by a factor called C and this result is subtracted by the W50 test result, M, to obtain the lower 95%- confidence level mass of material.   It looks like a z-score but the z-value of 1.8333 corresponds with 96%, not 95?

Making a long story short, I am looking for the table values or calcualtions for G and C.

Thank you.
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aasikolo
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aasikolo
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aasikoloAuthor Commented:
I found the attached document from the DTIC that contains the requested information.ADA279248-DTIC.pdf
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