The second set of data fails on this for the same reason as vezerid's, the -2
needs to be changed to a -1 if the first 2 signficant digits are =36.
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** John C **

"zorzal" wrote:

I checked one or two but I believe this formula will give you what you
need:

=10^-(INT(LOG(A1))-2)

HTH

Zorzal