datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,06 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 5:30:00,29 ,       0, 21.6393,13.70642,4.472909
sgpcmbeC1.c1,2002,06 6:30:00,29 ,6.550908,33.96989,16.37765,7.801717
sgpcmbeC1.c1,2002,06 7:30:00,29 ,2.664771,60.67812,16.61299,16.28708
sgpcmbeC1.c1,2002,06 8:30:00,29 ,1.714346,102.0708,24.00942,26.38761
sgpcmbeC1.c1,2002,06 9:30:00,29 , 1.68228,99.00491, 25.5613,25.42415
sgpcmbeC1.c1,2002,0610:30:00,29 ,0.951977,143.6967,36.50596,41.06346
sgpcmbeC1.c1,2002,0611:30:00,29 ,0.755159,83.79916,31.74443,25.27355
sgpcmbeC1.c1,2002,0612:30:00,29 ,1.449408,169.0353,46.45736,44.45266
sgpcmbeC1.c1,2002,0613:30:00,29 ,1.163481,152.6582,42.48634,39.64665
sgpcmbeC1.c1,2002,0614:30:00,29 , 0.62009,75.11272,27.94489,21.93743
sgpcmbeC1.c1,2002,0615:30:00,29 ,1.351945, 136.856,28.05242,34.31305
sgpcmbeC1.c1,2002,0616:30:00,29 ,1.981859,72.26943,23.86371,22.85455
sgpcmbeC1.c1,2002,0617:30:00,29 ,3.964649,39.95703,16.96036,10.59661
sgpcmbeC1.c1,2002,0618:30:00,29 ,       0,39.45464,15.25175,9.259654
sgpcmbeC1.c1,2002,0619:30:00,29 ,       0,22.05832,13.19046,5.335718
sgpcmbeC1.c1,2002,0620:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0621:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0622:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0623:30:00,29 ,       0,       0,       0,       0