Stat_Testing on Banners with 27 or More Banner Points

You can stat test up to 260 columns.

Columns 1-26 are labelled a thru z.
Columns 27-52 are labelled a1 thruz1.
Columns 53 to 78 are labelled a2 thru z2 and so on, until columns235-260 are labelled a9 thru z9.

Examples of defining in your specs:

STATISTICS=: ABCDEFGHIJKLMNOPQRSTUVW, XYZA1B1C1, D1E1F1STATISTICS=: A-W, X-C1, D1-F1