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Need a web form to enable selection of Source and destination, time window (from to), whether you want a time series or a distribution, whether you want a table to be printed that could be cut and pasted into Excel. Allow selection of multiple targets, but limit the number since it may take too long to produce the results.. See for example http://www-wanmon.slac.stanford.edu/cgi-wrap/ping_data_plot.pl
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