Display a single row from nested array of custom field data

I figured it out using a While loop and an If statement with a counter. This solution uses functions from Advanced Custom Fields;

$i = 0;  
while have_rows('week_rows') ): the_row();  
  $i++;  

  if( $i == 5 ) {  // stops on the 5th row of 'week_rows' array
    break;  
  }  

endwhile; // I had to move the endwhile up before my display statements 

// add display statements here to display array contents from 5th array row

?>