datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,06 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,06 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,06 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,06 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,06 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,06 5:30:00,30 ,       0,25.80301,10.92576,5.624009
sgpcmbeC1.c1,1999,06 6:30:00,30 , 1.52866,57.46155,18.67766,12.49197
sgpcmbeC1.c1,1999,06 7:30:00,30 , 2.46964,81.10871,25.74281,23.48699
sgpcmbeC1.c1,1999,06 8:30:00,30 ,1.947663, 127.594,36.86643,28.30387
sgpcmbeC1.c1,1999,06 9:30:00,30 ,1.332537,97.96027,49.70068, 28.5017
sgpcmbeC1.c1,1999,0610:30:00,30 ,0.840179, 119.839,49.65822,31.39784
sgpcmbeC1.c1,1999,0611:30:00,30 ,0.577982,139.0161,49.55812, 36.5774
sgpcmbeC1.c1,1999,0612:30:00,30 ,0.491081,140.6447,57.17653,42.13763
sgpcmbeC1.c1,1999,0613:30:00,30 ,0.640555, 167.671, 59.8999, 46.2343
sgpcmbeC1.c1,1999,0614:30:00,30 ,0.484258,154.6262,54.15806,41.04965
sgpcmbeC1.c1,1999,0615:30:00,30 ,1.292871,124.9952,46.83591,35.06967
sgpcmbeC1.c1,1999,0616:30:00,30 ,2.305637,106.8697,41.61064,30.01712
sgpcmbeC1.c1,1999,0617:30:00,30 ,1.967813,59.66571,27.56272, 16.1061
sgpcmbeC1.c1,1999,0618:30:00,30 ,       0,58.16544,22.23443, 12.9066
sgpcmbeC1.c1,1999,0619:30:00,30 ,       0,30.78968,12.02507,5.885321
sgpcmbeC1.c1,1999,0620:30:00,30 ,       0,4.322866,0.144096,0.789244
sgpcmbeC1.c1,1999,0621:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0622:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0623:30:00,30 ,       0,       0,       0,       0