% Cells contains all the cells 
% The third element in a cell is an array with RSS
% The fourth is an array with precision
for row=1:1:row_num
    for column=1:1:column_num  
      temp = cells{(row-1)*column_num + column}(:,3);
      for line=1:1:size((cells{(row-1)*column_num + column}(:,4)))
        % check if the precision of the GPS is greater then ....
        gps_precision = cells{(row-1)*column_num + column}(line,4);
        % weight 7
        if gps_precision <= 10 
          temp(end+1) = temp(line);
          temp(end+1) = temp(line);
          temp(end+1) = temp(line);
          temp(end+1) = temp(line);
          temp(end+1) = temp(line);
          temp(end+1) = temp(line);
        % weight 3
        elseif gps_precision <=100
            temp(end+1) = temp(line);
            temp(end+1) = temp(line);
        % weight 2
        elseif gps_precision <=200
            temp(end+1) = temp(line);
        end
        % else weight 1
      end
      cells_std(row,column) = std(temp);
    end
end