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Excel Formula For Counting Consecutive Zeros

Good Afternoon:

I created an excel formula to count the number of consecutive zeros in a column. I am interested in one consecutive zero, two consecutive zeros, three consecutive zeros, etc...

I used the following formula:

=SUM(IF(FREQUENCY(IF(P$2:P$279=0,ROW(P$2:P$279)),IF(P$2:P$279<>0,ROW(P$2:P$279)))=W2,FREQUENCY(IF(P$ 2:P$279=0,ROW(P$2:P$279)),IF(P$2:P$279<>0,ROW(P$2:P$279)))))

The formula works 98% of the time. It generally produces the correct number of consecutive zeros, however, occassionally it will indicate there are 15 sets of zeros = 15. Can anyone provide any guidance as to what should be done with this formula?

Thank you for your time.


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