datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,06 0:30:00,29 ,       0,1.630842,0.080986,0.326486
sgpcmbeC1.c1,2004,06 1:30:00,29 ,       0,1.377748,0.120483,0.327373
sgpcmbeC1.c1,2004,06 2:30:00,30 ,       0,1.182853, 0.09133,0.295826
sgpcmbeC1.c1,2004,06 3:30:00,30 ,       0,0.946534,0.055118,0.212105
sgpcmbeC1.c1,2004,06 4:30:00,30 ,       0,1.354353,0.126528,0.320139
sgpcmbeC1.c1,2004,06 5:30:00,30 ,2.047133,28.57372,16.09615,8.259528
sgpcmbeC1.c1,2004,06 6:30:00,30 ,       0,91.45357,38.49871,24.39025
sgpcmbeC1.c1,2004,06 7:30:00,30 , 1.18688,119.5937, 55.2409,29.57849
sgpcmbeC1.c1,2004,06 8:30:00,29 ,0.498478,256.4336,82.46086,  51.353
sgpcmbeC1.c1,2004,06 9:30:00,29 ,8.663313,203.3596,80.35299,59.58734
sgpcmbeC1.c1,2004,0610:30:00,29 ,17.68439,259.6629,117.9781,80.34547
sgpcmbeC1.c1,2004,0611:30:00,29 ,13.84016,292.5077,116.0928,93.23623
sgpcmbeC1.c1,2004,0612:30:00,29 ,2.818556,307.0489,110.9806,91.25627
sgpcmbeC1.c1,2004,0613:30:00,29 ,15.21817,342.6877,160.4105,103.5973
sgpcmbeC1.c1,2004,0614:30:00,29 ,31.09846,325.5818,160.7351,96.32044
sgpcmbeC1.c1,2004,0615:30:00,29 ,22.19701,  270.43,122.3258,74.78932
sgpcmbeC1.c1,2004,0616:30:00,29 , 19.4889,200.5536,102.4411,54.18412
sgpcmbeC1.c1,2004,0617:30:00,29 ,15.06556,178.9051,78.90073,38.83348
sgpcmbeC1.c1,2004,0618:30:00,29 ,21.92711,88.96303,52.12223,13.95991
sgpcmbeC1.c1,2004,0619:30:00,29 ,4.812557,44.05354,22.38571,9.548244
sgpcmbeC1.c1,2004,0620:30:00,29 ,       0,1.113989,0.095525, 0.29179
sgpcmbeC1.c1,2004,0621:30:00,28 ,       0,0.550697,0.039156,0.143771
sgpcmbeC1.c1,2004,0622:30:00,27 ,       0,0.694401,0.040429,0.151381
sgpcmbeC1.c1,2004,0623:30:00,27 ,       0,1.383448,0.051239,0.266245