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Argh. Must learn to write at third grade level.... I wanted to say I like breaking up 6XX as Roy has done because 6XX fields vary in purpose and tag frequency varies considerably. On Wed, Oct 16, 2013 at 11:08 AM, Kyle Banerjee <[log in to unmask]>wrote: > This squares with what I'm seeing. Data for all holdings of the Orbis > Cascade Alliance is: > > 100: 30.1 > 245: 114.1 > 6XX: 36.1 > > My values include indicators (2 characters) as well as any delimiters but > not the tag number itself. I breaking up 6XX up as Roy has as 6XX's are far > from created equal and frequency of occurrence varies radically with tag. > > I'm going to guess our 245 values are longer because we're an academic > consortium and holdings are biased towards academic titles which tend to be > longer. >