datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,01 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 3:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 4:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 6:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 7:30:00,31 ,       0,6.883293,1.187055,1.670591
sgpcmbeC1.c1,2004,01 8:30:00,31 ,0.000156,60.40574,20.69888,20.22408
sgpcmbeC1.c1,2004,01 9:30:00,31 ,0.001739,77.37993,28.47015, 24.5944
sgpcmbeC1.c1,2004,0110:30:00,31 ,0.039137,139.3516,30.82108,32.06166
sgpcmbeC1.c1,2004,0111:30:00,31 ,0.065756,176.8763, 38.4154,48.25301
sgpcmbeC1.c1,2004,0112:30:00,31 ,0.021259,164.5553,35.91062,52.23936
sgpcmbeC1.c1,2004,0113:30:00,31 ,0.005626,151.9159, 34.7204,41.76317
sgpcmbeC1.c1,2004,0114:30:00,31 , 0.05797,134.5244,34.52538,35.58667
sgpcmbeC1.c1,2004,0115:30:00,31 ,0.052871, 79.5297,32.89701,24.52229
sgpcmbeC1.c1,2004,0116:30:00,31 , 0.01392,59.69502,26.80045, 21.2972
sgpcmbeC1.c1,2004,0117:30:00,31 ,0.000117,28.20981,7.119019,8.761054
sgpcmbeC1.c1,2004,0118:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0120:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0121:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0122:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0123:30:00,29 ,       0,       0,       0,       0