datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,04 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 5:30:00,30 ,       0,7.477769,1.710026,2.255196
sgpcmbeC1.c1,2003,04 6:30:00,30 ,4.369517,59.90007,36.81496, 17.7368
sgpcmbeC1.c1,2003,04 7:30:00,30 ,10.46202,110.2477,65.73314,21.11911
sgpcmbeC1.c1,2003,04 8:30:00,30 ,13.87291, 145.563,68.41227, 27.3432
sgpcmbeC1.c1,2003,04 9:30:00,30 ,10.77549,174.7141,77.41525, 43.4997
sgpcmbeC1.c1,2003,0410:30:00,30 ,30.31084,298.7253,80.65254,66.35317
sgpcmbeC1.c1,2003,0411:30:00,30 ,10.41818,298.6368,  82.684,80.05803
sgpcmbeC1.c1,2003,0412:30:00,30 ,2.893714,303.3856,84.24149,83.17532
sgpcmbeC1.c1,2003,0413:30:00,30 ,16.63066,273.2188,92.07076, 84.5314
sgpcmbeC1.c1,2003,0414:30:00,30 ,11.39414,352.7409,94.14877,80.28687
sgpcmbeC1.c1,2003,0415:30:00,30 ,19.11587,212.6177,90.54805,54.07781
sgpcmbeC1.c1,2003,0416:30:00,30 ,22.40894,194.6458,80.98168,31.96005
sgpcmbeC1.c1,2003,0417:30:00,30 ,7.878909,107.2931,67.04342,20.14477
sgpcmbeC1.c1,2003,0418:30:00,30 ,7.009795,61.13154, 39.4797,14.97737
sgpcmbeC1.c1,2003,0419:30:00,30 ,       0,5.903386,1.624841, 1.56746
sgpcmbeC1.c1,2003,0420:30:00,30 ,       0,1.697203,0.119372,0.383799
sgpcmbeC1.c1,2003,0421:30:00,30 ,       0,1.579113,0.167591,0.450858
sgpcmbeC1.c1,2003,0422:30:00,30 ,       0, 0.86161,0.044694,0.177345
sgpcmbeC1.c1,2003,0423:30:00,29 ,       0,       0,       0,       0