MT4 Backtesting with 0 value results

 

I am trying to understand the meaning of zero value in back testing. When I run a back test I get a number of positive results a number of negative results and a large segment of 0 results. I wish somebody could explain why this is happening and what is the meaning of these 0 results. To make clear my question I am attaching to this message a copy of an XLS file that shows my question.

Looking forward to a response  

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