We have been seeing some results in our stacked graphs that do not appear to make sense.

Initially we thought this was because the maximum values for the two values occurred at different points in time.

That cannot be the whole issue because even if you take the sum of every pair of numbers the maximum aggregate must at least equal the maximum value of one of the two series.

This graph shows the problem:

How can we have a maximum value of 97.4M but an aggregate maximum of 55.7M? It seems that maximum aggregate should also at least be 97.4M.

What’s happening here?

Thanks,

  Dave.