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 ,       0,6.264639, 2.14641,  1.7586
sgpcmbeC1.c1,2002,07 6:30:00,31 ,0.109463,46.20992,24.48206,15.52357
sgpcmbeC1.c1,2002,07 7:30:00,31 , 0.11787,113.9843,40.91427,25.51939
sgpcmbeC1.c1,2002,07 8:30:00,31 ,  0.5015,134.8673,54.61478,33.81326
sgpcmbeC1.c1,2002,07 9:30:00,31 ,1.749787,190.8808,66.42011,52.00506
sgpcmbeC1.c1,2002,0710:30:00,31 ,6.748529,267.1785,88.90022,80.78081
sgpcmbeC1.c1,2002,0711:30:00,31 ,4.767714,336.8473,137.0706,115.2391
sgpcmbeC1.c1,2002,0712:30:00,31 ,0.345889,329.9387,135.6408,112.2032
sgpcmbeC1.c1,2002,0713:30:00,31 ,0.262996,338.1612,142.9756,111.8794
sgpcmbeC1.c1,2002,0714:30:00,31 ,0.792538,293.9004, 120.237,92.94621
sgpcmbeC1.c1,2002,0715:30:00,31 ,2.288101, 255.785,113.5623,77.51224
sgpcmbeC1.c1,2002,0716:30:00,31 ,0.507135,196.1755,85.67554, 51.0446
sgpcmbeC1.c1,2002,0717:30:00,31 ,0.795725,137.4029,62.17709,33.86168
sgpcmbeC1.c1,2002,0718:30:00,31 ,       0,61.12586,32.08553,16.68258
sgpcmbeC1.c1,2002,0719:30:00,31 ,       0, 14.5236,5.753859,4.625779
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