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Dr Baird,

It depends if your units of analysis are persons or organizations.
If persons, then treat each separately.

If organizations, as I suspect, then you can make a combined frequency of
contact metric for each organization, by adding all together.

  Barry Wellman
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   S.D. Clark Professor of Sociology, FRSC NetLab Director
   Department of Sociology 725 Spadina Avenue, Room 388
   University of Toronto Toronto Canada M5S 2J4 twitter:barrywellman
   http://www.chass.utoronto.ca/~wellman fax:+1-416-978-3963
   Updating history: http://chass.utoronto.ca/oldnew/cybertimes.php
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