datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,05 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 5:30:00,31 ,       0,21.55461,10.00299,5.457876
sgpcmbeC1.c1,2004,05 6:30:00,31 , 1.95942,57.48902,24.43531,15.08742
sgpcmbeC1.c1,2004,05 7:30:00,25 ,3.173083, 114.758,26.92756,27.11684
sgpcmbeC1.c1,2004,05 8:30:00,27 ,1.046682,191.6252,48.47676,49.15042
sgpcmbeC1.c1,2004,05 9:30:00,25 ,1.430597,107.6977,40.59951,34.53915
sgpcmbeC1.c1,2004,0510:30:00,25 ,1.539491,139.6331,48.67647,37.82731
sgpcmbeC1.c1,2004,0511:30:00,25 ,1.603044,174.3673,54.03998,43.24742
sgpcmbeC1.c1,2004,0512:30:00,26 ,2.294716,172.2456,48.09029,44.54598
sgpcmbeC1.c1,2004,0513:30:00,27 ,1.200713,182.1194,34.78228,41.41675
sgpcmbeC1.c1,2004,0514:30:00,27 ,0.676027,166.9317,30.79428,37.65078
sgpcmbeC1.c1,2004,0515:30:00,25 ,0.864668,77.91048,22.51841,21.17252
sgpcmbeC1.c1,2004,0516:30:00,27 ,2.584247,204.0437, 35.8546,42.48399
sgpcmbeC1.c1,2004,0517:30:00,25 ,2.419525,77.40409, 23.9444,20.65861
sgpcmbeC1.c1,2004,0518:30:00,31 ,6.977859,61.99091,25.96756,15.65555
sgpcmbeC1.c1,2004,0519:30:00,31 , 1.16367,21.34501,9.032032,4.456154
sgpcmbeC1.c1,2004,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0522:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0523:30:00,31 ,       0,       0,       0,       0