datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,04 0:30:00,30 , 0.32787,24.73743,4.033423,5.891055
sgpcmbeC1.c1,2003,04 1:30:00,30 ,0.443128,28.27299,4.588643,6.958501
sgpcmbeC1.c1,2003,04 2:30:00,30 ,0.274129,  21.383,3.782424,4.654882
sgpcmbeC1.c1,2003,04 3:30:00,30 ,0.280528,25.59787,3.404466,5.207755
sgpcmbeC1.c1,2003,04 4:30:00,30 , 0.26803,14.96234,2.607007,3.253495
sgpcmbeC1.c1,2003,04 5:30:00,30 ,0.254037,26.04559,4.167107,6.068959
sgpcmbeC1.c1,2003,04 6:30:00,30 , 0.21661,26.65298,3.163822,5.188265
sgpcmbeC1.c1,2003,04 7:30:00,30 ,0.260568,23.23458,4.558758,5.463896
sgpcmbeC1.c1,2003,04 8:30:00,30 ,1.528865, 27.3768,4.938663,5.319555
sgpcmbeC1.c1,2003,04 9:30:00,30 , 1.03685,18.00652,4.055861,3.536089
sgpcmbeC1.c1,2003,0410:30:00,30 , 0.62058,25.84188,5.167319,6.305196
sgpcmbeC1.c1,2003,0411:30:00,30 ,0.963935, 19.5626,5.145625,5.145416
sgpcmbeC1.c1,2003,0412:30:00,30 ,1.033927,24.23605,4.346431,4.674468
sgpcmbeC1.c1,2003,0413:30:00,30 , 0.99267,27.49975,5.540858,7.010397
sgpcmbeC1.c1,2003,0414:30:00,30 ,0.449235,13.93498,4.277402,  4.0247
sgpcmbeC1.c1,2003,0415:30:00,30 ,0.450259,15.62888,4.643299,4.453202
sgpcmbeC1.c1,2003,0416:30:00,30 ,0.730671,19.94673, 3.94679,4.909536
sgpcmbeC1.c1,2003,0417:30:00,30 ,0.761957,25.14161,4.246904, 5.38238
sgpcmbeC1.c1,2003,0418:30:00,30 ,0.432314,34.36514,5.619726,7.347419
sgpcmbeC1.c1,2003,0419:30:00,30 ,0.567783,21.80889,4.424917,5.287383
sgpcmbeC1.c1,2003,0420:30:00,30 ,0.490185,29.45469,4.899653,7.404563
sgpcmbeC1.c1,2003,0421:30:00,30 ,0.396617,26.27738, 3.76552,5.861186
sgpcmbeC1.c1,2003,0422:30:00,30 ,0.620808,24.52274,3.453092,5.740085
sgpcmbeC1.c1,2003,0423:30:00,30 ,0.282284, 31.6292, 7.67487,9.488906