datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,04 0:30:00,27 ,       0,0.040446,0.002666,0.008645
sgpcmbeC1.c1,2007,04 1:30:00,28 ,       0,0.109386,0.003939,0.020666
sgpcmbeC1.c1,2007,04 2:30:00,28 ,       0,0.046081, 0.00255,0.009231
sgpcmbeC1.c1,2007,04 3:30:00,28 ,       0,0.069412, 0.00309,0.013393
sgpcmbeC1.c1,2007,04 4:30:00,28 ,       0,0.000901,0.000032, 0.00017
sgpcmbeC1.c1,2007,04 5:30:00,29 ,       0,2.637682,0.440029,0.760554
sgpcmbeC1.c1,2007,04 6:30:00,30 ,       0,15.78411,7.680966,5.105964
sgpcmbeC1.c1,2007,04 7:30:00,30 ,       0,23.25654,11.17052,5.450074
sgpcmbeC1.c1,2007,04 8:30:00,30 , 1.24265,37.51661,14.77561,10.63505
sgpcmbeC1.c1,2007,04 9:30:00,29 ,2.153384, 39.7971,13.92135,11.51605
sgpcmbeC1.c1,2007,0410:30:00,30 ,1.490194,45.75307, 12.9618,11.44987
sgpcmbeC1.c1,2007,0411:30:00,30 ,0.482312,46.75663,14.65034,14.34039
sgpcmbeC1.c1,2007,0412:30:00,30 ,0.370589,64.23002,15.91473,19.45026
sgpcmbeC1.c1,2007,0413:30:00,30 ,1.633329,66.89921,19.34167,21.06831
sgpcmbeC1.c1,2007,0414:30:00,30 ,1.293139,70.19504,20.17226,20.00658
sgpcmbeC1.c1,2007,0415:30:00,30 ,0.963343,55.51439,14.01996, 13.8442
sgpcmbeC1.c1,2007,0416:30:00,30 ,0.874875,37.01064,15.91823, 10.5596
sgpcmbeC1.c1,2007,0417:30:00,30 ,0.092021,20.02579,10.91364,5.115262
sgpcmbeC1.c1,2007,0418:30:00,30 ,0.618682, 15.5494,8.895139,4.545502
sgpcmbeC1.c1,2007,0419:30:00,28 ,       0,2.638814,0.263405,0.546342
sgpcmbeC1.c1,2007,0420:30:00,28 ,       0,0.023393,0.000868,0.004418
sgpcmbeC1.c1,2007,0421:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0422:30:00,28 ,       0,0.081543,0.002912, 0.01541
sgpcmbeC1.c1,2007,0423:30:00,28 ,       0,0.050405,  0.0018,0.009526