conditional format minim value per column

Hi,

in a table of numbers I am trying to highlight the lowest value(s) in red.
I have tried the following formula, but somehow this gives a mixed result;


conditional format question.png

Columns F, K-Q and T give the wrong result, and I don't understand why.
The only other conditional formatting going on here is "if blank, fill grey", thats whats happening in rows 36-40.

Thanks for the help!

You should attach a sample Excel workbook, rather than a picture of one - see the yellow banner at the top of the screen for details of how to do this.

Pete