datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,07 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 5:30:00,31 ,       0,  20.382,10.06027,4.024587
sgpcmbeC1.c1,2002,07 6:30:00,31 ,5.215346,36.67964,19.80107,6.515288
sgpcmbeC1.c1,2002,07 7:30:00,31 ,4.569694,70.33253,18.26163,13.13027
sgpcmbeC1.c1,2002,07 8:30:00,31 ,2.279416,122.7884, 23.6267,26.59506
sgpcmbeC1.c1,2002,07 9:30:00,31 ,1.176849,120.2019,33.27711,34.86555
sgpcmbeC1.c1,2002,0710:30:00,31 ,0.686756,158.9961,28.86164, 33.9362
sgpcmbeC1.c1,2002,0711:30:00,31 ,0.722974,100.6118,35.46469,28.57128
sgpcmbeC1.c1,2002,0712:30:00,31 ,0.823645,100.0731,37.04254,27.97002
sgpcmbeC1.c1,2002,0713:30:00,31 ,1.398533,220.3108,41.38444,43.49291
sgpcmbeC1.c1,2002,0714:30:00,31 ,0.677316,138.8288,36.59648,29.59077
sgpcmbeC1.c1,2002,0715:30:00,31 ,1.966016,184.8866,34.91966,36.22013
sgpcmbeC1.c1,2002,0716:30:00,31 ,2.731513,95.22182,29.45807,19.19153
sgpcmbeC1.c1,2002,0717:30:00,31 ,4.154748,53.81899,21.47135,13.16773
sgpcmbeC1.c1,2002,0718:30:00,31 ,       0,44.27864, 21.6998,10.73241
sgpcmbeC1.c1,2002,0719:30:00,31 ,       0,26.74867,13.81246,5.482733
sgpcmbeC1.c1,2002,0720:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0723:30:00,31 ,       0,       0,       0,       0