datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,01 0:30:00,31 ,0.306344,  2.2029,0.916488, 0.53643
sgpcmbeC1.c1,2007,01 1:30:00,31 ,  0.3199,2.281456,0.923315,0.531005
sgpcmbeC1.c1,2007,01 2:30:00,31 ,0.321581,2.423345,0.932434,0.546453
sgpcmbeC1.c1,2007,01 3:30:00,31 ,0.326193,2.599134,0.949404,0.579906
sgpcmbeC1.c1,2007,01 4:30:00,31 ,0.308968,2.612833,0.956292,0.583299
sgpcmbeC1.c1,2007,01 5:30:00,31 ,0.289682,2.658081,0.987379,0.598446
sgpcmbeC1.c1,2007,01 6:30:00,31 ,0.285588,2.655194,1.003335,0.624771
sgpcmbeC1.c1,2007,01 7:30:00,31 ,0.280169,2.613446, 1.02076,0.638627
sgpcmbeC1.c1,2007,01 8:30:00,31 ,0.281408,2.417526,1.025092,0.651163
sgpcmbeC1.c1,2007,01 9:30:00,31 ,0.269772,2.514826,1.026525,0.666899
sgpcmbeC1.c1,2007,0110:30:00,31 ,0.260143,2.638999,1.019091,0.680857
sgpcmbeC1.c1,2007,0111:30:00,31 ,0.257141,2.634578, 1.00799,0.675045
sgpcmbeC1.c1,2007,0112:30:00,31 ,0.253395,2.614259,0.998726,0.653318
sgpcmbeC1.c1,2007,0113:30:00,31 , 0.25176, 2.62887,0.982858, 0.62142
sgpcmbeC1.c1,2007,0114:30:00,31 ,0.249603,2.542366,0.965508, 0.57789
sgpcmbeC1.c1,2007,0115:30:00,31 , 0.25139,2.589796,0.974406,0.591686
sgpcmbeC1.c1,2007,0116:30:00,31 ,0.261787,3.165497,0.990941,0.644033
sgpcmbeC1.c1,2007,0117:30:00,31 ,0.268441,3.930894,1.014785,0.736181
sgpcmbeC1.c1,2007,0118:30:00,30 ,0.271573,3.377554,0.976333,0.664828
sgpcmbeC1.c1,2007,0119:30:00,30 ,0.291095,2.831771,0.948159,0.582685
sgpcmbeC1.c1,2007,0120:30:00,30 ,0.278228,2.443873,0.921275,0.537567
sgpcmbeC1.c1,2007,0121:30:00,30 ,0.266362,2.053822,0.904192,0.501096
sgpcmbeC1.c1,2007,0122:30:00,31 ,0.282036,2.327262,0.945414,0.558648
sgpcmbeC1.c1,2007,0123:30:00,31 ,0.297248,2.216352,0.942988,0.550361