On 20 Jan, 22:28, Ron Rosenfeld wrote:
On Tue, 20 Jan 2009 16:22:18 -0500, Ron Rosenfeld
wrote:

Rang refers to $B$1:$B$12

Darn spell checkers; that should read:

Rng refers to $B$1:$B$12
--ron

Thank you for reminding me about this. I will certenly check the
formula and the model many times. I am reading me up about
arrayformulas now. It is a hidden resource in Excel. A bit difficult
to understand.