On Fri, 25 May 2012, Larry Brigman wrote:

> Well none of the other chemicals had a filter match with a value of 0.000.
> The only match from the filter for chemical was Cr but it had a -0.006
> Ba,Bi and Cd had 0.000 but nothing was in the filter for them. I added two
> valued to the table to check that it work and they matched and changed the
> values.

   Ah, so! I ran a database query for those with negative numbers, but forgot
to do the same for those with zeros. That certainly explains it!

   Another case of seeing what I expect to see rather than what's there, and
fresh eyes easily see just what's there (or missing, in this case).

Thanks,

Rich

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