datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,04 0:30:00,30 ,       0,0.805006,0.030533, 0.14767
sgpcmbeC1.c1,2005,04 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,04 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,04 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,04 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,04 5:30:00,30 ,       0,3.889393,0.572754, 1.04017
sgpcmbeC1.c1,2005,04 6:30:00,30 ,0.624115,15.71605, 9.62968,5.222481
sgpcmbeC1.c1,2005,04 7:30:00,30 ,0.975874,  22.168, 12.0884,5.476304
sgpcmbeC1.c1,2005,04 8:30:00,30 ,3.214683,44.98959,17.32963,11.23217
sgpcmbeC1.c1,2005,04 9:30:00,30 ,3.871491,46.36874,16.40497,12.87723
sgpcmbeC1.c1,2005,0410:30:00,30 ,1.477301,52.11431,17.85924, 16.2827
sgpcmbeC1.c1,2005,0411:30:00,30 ,1.015458,56.16642,19.41149,16.88591
sgpcmbeC1.c1,2005,0412:30:00,30 ,0.449047,58.27544,24.73226,19.89492
sgpcmbeC1.c1,2005,0413:30:00,30 ,1.604405,63.14529,22.55065,18.60664
sgpcmbeC1.c1,2005,0414:30:00,30 ,  3.5292,56.68021,18.11563,14.25775
sgpcmbeC1.c1,2005,0415:30:00,30 ,1.913475,51.13545, 18.5285, 13.2421
sgpcmbeC1.c1,2005,0416:30:00,30 ,8.605547, 45.4827,19.37178, 10.5029
sgpcmbeC1.c1,2005,0417:30:00,30 ,3.675206,29.69955,14.37651,6.229455
sgpcmbeC1.c1,2005,0418:30:00,30 , 1.17902,19.69988,9.077986,5.308476
sgpcmbeC1.c1,2005,0419:30:00,30 ,       0,2.238259,0.240389,  0.5054
sgpcmbeC1.c1,2005,0420:30:00,30 ,       0, 0.02081,0.000694,0.003799
sgpcmbeC1.c1,2005,0421:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0422:30:00,30 ,       0,0.041578,0.001386,0.007591
sgpcmbeC1.c1,2005,0423:30:00,30 ,       0,0.103347,0.005697,0.022183