datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,04 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 2:30:00,27 ,       0,0.040377,0.001495, 0.00777
sgpcmbeC1.c1,2004,04 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 5:30:00,28 ,       0,1.470494,0.212223,0.406356
sgpcmbeC1.c1,2004,04 6:30:00,28 ,0.089276,29.65721,11.61888,9.009109
sgpcmbeC1.c1,2004,04 7:30:00,28 ,2.604465,72.49197,38.05488,23.80782
sgpcmbeC1.c1,2004,04 8:30:00,28 ,6.667038,117.2376,69.84296,38.81441
sgpcmbeC1.c1,2004,04 9:30:00,29 ,10.70205,145.6978,98.01593,48.00975
sgpcmbeC1.c1,2004,0410:30:00,29 ,9.231507,172.3558,125.6546,47.06009
sgpcmbeC1.c1,2004,0411:30:00,29 ,22.94902, 180.524,134.2566,51.42808
sgpcmbeC1.c1,2004,0412:30:00,29 ,13.11991,186.5976,131.6178,57.32564
sgpcmbeC1.c1,2004,0413:30:00,29 ,25.72412,179.0272,120.2193,56.41562
sgpcmbeC1.c1,2004,0414:30:00,29 ,8.032554,159.7995,108.7097, 51.8279
sgpcmbeC1.c1,2004,0415:30:00,29 ,5.533864,143.3348,93.99065,43.85461
sgpcmbeC1.c1,2004,0416:30:00,29 ,3.876676,104.2952,71.09273,31.70594
sgpcmbeC1.c1,2004,0417:30:00,29 ,1.111277,68.51744, 39.1672, 21.6902
sgpcmbeC1.c1,2004,0418:30:00,29 ,       0,24.37051,10.41212,6.911969
sgpcmbeC1.c1,2004,0419:30:00,29 ,       0,0.497168,0.056001,0.125635
sgpcmbeC1.c1,2004,0420:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0421:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0422:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0423:30:00,27 ,       0,       0,       0,       0