datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,07 0:30:00,30 ,0.667355,17.66195,2.860824,3.598444
sgpcmbeC1.c1,2004,07 1:30:00,30 ,0.539721,14.70121,2.858867,3.333597
sgpcmbeC1.c1,2004,07 2:30:00,30 ,0.665736,16.69481,3.074427,3.434601
sgpcmbeC1.c1,2004,07 3:30:00,30 ,0.669144,7.066335,2.032042,1.567886
sgpcmbeC1.c1,2004,07 4:30:00,30 ,0.635464,15.65507,2.860026,4.010887
sgpcmbeC1.c1,2004,07 5:30:00,30 ,0.775566,10.59376,2.518049,2.655041
sgpcmbeC1.c1,2004,07 6:30:00,30 ,0.657037,14.34031,3.275745,3.167397
sgpcmbeC1.c1,2004,07 7:30:00,30 , 1.02231,11.04976,3.410188,2.357319
sgpcmbeC1.c1,2004,07 8:30:00,30 , 0.83086,11.65597,3.813107,2.581578
sgpcmbeC1.c1,2004,07 9:30:00,30 ,0.780154,12.17169,4.076282,2.883747
sgpcmbeC1.c1,2004,0710:30:00,30 ,0.814372,13.82477,3.890573,2.997224
sgpcmbeC1.c1,2004,0711:30:00,30 ,0.835142,11.15885,3.938209,2.938391
sgpcmbeC1.c1,2004,0712:30:00,31 ,1.129884,13.37562,3.397496, 2.57208
sgpcmbeC1.c1,2004,0713:30:00,30 , 0.88277,6.956639, 3.20149,1.641535
sgpcmbeC1.c1,2004,0714:30:00,30 ,0.997977,11.89278,3.369929,2.208978
sgpcmbeC1.c1,2004,0715:30:00,30 ,1.244942,8.132564,3.345907,2.001418
sgpcmbeC1.c1,2004,0716:30:00,31 ,0.854679,13.29489,3.047578,2.394061
sgpcmbeC1.c1,2004,0717:30:00,31 ,0.909009,13.15099,3.115638,2.939766
sgpcmbeC1.c1,2004,0718:30:00,31 ,0.766766,13.61877, 2.88569,2.193879
sgpcmbeC1.c1,2004,0719:30:00,31 ,1.132476,15.95377,  3.7519,2.553228
sgpcmbeC1.c1,2004,0720:30:00,31 ,0.715613,19.38392,3.374661,3.396618
sgpcmbeC1.c1,2004,0721:30:00,31 ,0.814027, 16.1546,2.720489,3.097191
sgpcmbeC1.c1,2004,0722:30:00,31 ,0.708014,12.72419, 3.06901,3.251867
sgpcmbeC1.c1,2004,0723:30:00,31 ,0.652046,12.03441,2.963357, 3.25761