conditional counting

in the attached sheet I have numbers from cell B1 to AF1..some cells are blank and some contain text.

In cell AG1 I want a formula to count the number of cells from B1 to F1 which contain values over zero and less than 0.7.

this formula can then be copied down for rows 2 and 3 etc.

=SUMPRODUCT( (B1:AF1 > 0) * (B1:AF1 < 0.7) )

Thanks Shg