Mr. Macropod,

You are right, the value is 150.96515, but i just need the round up number. The matching logic to find the value is that the value should be below the peak.

from my point of view (for the data and the graph), the value i want occurred several times (before the peak or max and after that) and the formula i use will pick the later.

Is there anyway to limit the search up to the max value only, so that it will pick the value before the peak? The formula i want to write is general so that i can use it with any data i have.

Your effort is much appreciated.

Regards,
Udea