In Excel, my challenge is to count the maximum number of consecutive
positive numbers in a column consisting of blank cells and formulas that
evaluate to numbers and "".

For example, starting in A1, the cells evaluate to:

1
-2
3

5
-6

The result would be 2 (counting the two consecutive positive numbers, 3 and
5, above and below the blank or "" cell).

This needs to be done using a single formula or array formula, without using
a separate running total column using =MAX, and without using a UDF. They
say it can't be done and I need to confirm that.

Thank you all,
JP