datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,05 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,05 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,05 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,05 5:30:00,31 ,0.061159,10.55476,4.070849,3.301811
sgpcmbeC1.c1,2005,05 6:30:00,31 ,3.383343,51.50175,26.30284,15.98281
sgpcmbeC1.c1,2005,05 7:30:00,31 ,9.674419,92.52661,59.16043,27.24563
sgpcmbeC1.c1,2005,05 8:30:00,31 ,4.507947,127.1403,85.25566,38.33264
sgpcmbeC1.c1,2005,05 9:30:00,31 ,6.977134,149.4077,109.1785,42.04877
sgpcmbeC1.c1,2005,0510:30:00,31 ,48.03606,174.6735,122.9762,40.04933
sgpcmbeC1.c1,2005,0511:30:00,31 ,50.99691,171.0807,128.0792,39.27499
sgpcmbeC1.c1,2005,0512:30:00,31 ,15.69716, 169.802,126.0164,44.05857
sgpcmbeC1.c1,2005,0513:30:00,31 ,25.74149,170.3001,125.6943,43.94325
sgpcmbeC1.c1,2005,0514:30:00,31 ,3.284898,158.3048,115.5928,43.65172
sgpcmbeC1.c1,2005,0515:30:00,30 ,6.898123,141.4767,107.9029,36.63213
sgpcmbeC1.c1,2005,0516:30:00,31 ,1.506256,119.0894,80.91447,36.97707
sgpcmbeC1.c1,2005,0517:30:00,31 ,1.797855,85.28544,55.81018,26.53323
sgpcmbeC1.c1,2005,0518:30:00,31 ,0.584482, 45.9375,27.11265,12.31687
sgpcmbeC1.c1,2005,0519:30:00,31 ,0.025212,14.68698, 3.25573,3.500469
sgpcmbeC1.c1,2005,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0522:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0523:30:00,31 ,       0,       0,       0,       0