datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,04 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 5:30:00,30 ,       0,8.046093,1.331097,2.309521
sgpcmbeC1.c1,2002,04 6:30:00,30 ,       0,82.57751,27.19893,21.20413
sgpcmbeC1.c1,2002,04 7:30:00,30 ,6.116428,120.8017,50.27887,31.57042
sgpcmbeC1.c1,2002,04 8:30:00,30 ,1.081857,126.7234,51.59931,32.32581
sgpcmbeC1.c1,2002,04 9:30:00,30 ,2.164873,219.0135,64.65463,45.29023
sgpcmbeC1.c1,2002,0410:30:00,30 ,5.093836, 208.891,64.58534,49.59394
sgpcmbeC1.c1,2002,0411:30:00,30 , 17.5292,220.9347,69.63419,61.51115
sgpcmbeC1.c1,2002,0412:30:00,30 ,2.809772,219.9133,65.04547, 67.6612
sgpcmbeC1.c1,2002,0413:30:00,30 ,16.77206,326.5823,77.86649,76.41293
sgpcmbeC1.c1,2002,0414:30:00,30 ,15.12569,248.8674,77.11293,60.30426
sgpcmbeC1.c1,2002,0415:30:00,30 ,17.09761,208.8895,73.61598,44.75843
sgpcmbeC1.c1,2002,0416:30:00,30 ,7.273473,154.3715,70.64787,33.02773
sgpcmbeC1.c1,2002,0417:30:00,30 ,5.699542,103.1569,50.62337,25.48079
sgpcmbeC1.c1,2002,0418:30:00,30 ,1.153027,69.02998,36.30015,18.35671
sgpcmbeC1.c1,2002,0419:30:00,30 ,       0,6.485045,1.710058,1.982055
sgpcmbeC1.c1,2002,0420:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0421:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0422:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0423:30:00,29 ,       0,       0,       0,       0