datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,05 0:30:00,31 ,       0, 1.38033, 0.14206,0.328036
sgpcmbeC1.c1,2005,05 1:30:00,31 ,       0,1.303255,0.076917,0.248883
sgpcmbeC1.c1,2005,05 2:30:00,31 ,       0,1.444843,0.089066,0.279834
sgpcmbeC1.c1,2005,05 3:30:00,31 ,       0, 1.04459, 0.07392,0.238465
sgpcmbeC1.c1,2005,05 4:30:00,31 ,       0,1.911301,0.119763,0.378294
sgpcmbeC1.c1,2005,05 5:30:00,31 ,1.107843,28.34193,13.35258,8.419209
sgpcmbeC1.c1,2005,05 6:30:00,31 ,11.69933,193.4511,104.2584,54.64271
sgpcmbeC1.c1,2005,05 7:30:00,31 ,53.72637,394.5244,256.9468,109.4754
sgpcmbeC1.c1,2005,05 8:30:00,31 ,19.94863,607.9249,403.8366,177.8106
sgpcmbeC1.c1,2005,05 9:30:00,31 , 39.1148,791.9474, 560.069,222.5456
sgpcmbeC1.c1,2005,0510:30:00,31 ,246.1083,921.6937,670.3739,237.8166
sgpcmbeC1.c1,2005,0511:30:00,31 ,278.6159,1003.506,727.6031, 258.601
sgpcmbeC1.c1,2005,0512:30:00,31 ,84.98587,1025.996,736.7379,293.0605
sgpcmbeC1.c1,2005,0513:30:00,31 ,131.5352,993.3418,729.4934,283.6722
sgpcmbeC1.c1,2005,0514:30:00,31 ,30.37472,910.7322,646.4584,261.8919
sgpcmbeC1.c1,2005,0515:30:00,31 , 9.76955,757.4622,547.6094,217.6937
sgpcmbeC1.c1,2005,0516:30:00,31 ,10.98748,578.4435,396.0948,176.6264
sgpcmbeC1.c1,2005,0517:30:00,31 ,12.66527, 371.029, 247.116,111.3474
sgpcmbeC1.c1,2005,0518:30:00,31 ,5.952335,172.8782,109.5473,45.28687
sgpcmbeC1.c1,2005,0519:30:00,31 ,0.335099,38.47066,12.30022,7.848321
sgpcmbeC1.c1,2005,0520:30:00,31 ,       0,1.746382,0.245682,0.499841
sgpcmbeC1.c1,2005,0521:30:00,31 ,       0,1.430456, 0.12134,0.337416
sgpcmbeC1.c1,2005,0522:30:00,31 ,       0,0.876616,0.092146,0.243447
sgpcmbeC1.c1,2005,0523:30:00,31 ,       0,1.587257,0.104113,0.302392