28-May-2019 13:01:35.000,200.0

M = [datestr(DT(:,1)),num2str(FINAL(:,2)))]
 dlmwrite(filename,M,'delimiter',' ', 'precision','%12.6f')

2 8 - M a y - 2 0 1 9   1 3 : 0 1 : 3 5 4 9 7 . 6 2 1 9