How to quickly find the highest value in a table?

[aadesh28]

I have a table of data imported from a csv file. There are 10 columns across the top. Down the side there are a couple of hundred rows representing dates/times.

For each of the 10 columns, I need to determine the date/time when its value was the highest. Of course I could plot a visual graph and look for peaks, but I'm hoping for a faster way to do this. Is there some trick or macro that would accomplish this very quickly? Thanks in advance.

 

[p45cal]

In the attached, a table of data and in the Totals row at the bottom a formula of the ilk:
=INDEX([dt],MATCH(MAX([val1]),[val1],0))
If there are 2 or more maxima of the same value it will return the first (highest in the table).
It doesn't need to be a table, you can use non-structured references instead.

 

[aadesh28]

Thank you for your response,