datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,07 0:30:00,31 ,       0,0.641694,0.045248,0.136143
sgpcmbeC1.c1,2007,07 1:30:00,31 ,       0,0.537673,0.038686,0.113535
sgpcmbeC1.c1,2007,07 2:30:00,31 ,       0,0.306014,0.021002,0.063559
sgpcmbeC1.c1,2007,07 3:30:00,31 ,       0,0.545635,0.018074,0.097946
sgpcmbeC1.c1,2007,07 4:30:00,31 ,       0, 0.71704,0.025271,0.128938
sgpcmbeC1.c1,2007,07 5:30:00,31 ,0.037945,8.427423,1.826569,2.108387
sgpcmbeC1.c1,2007,07 6:30:00,31 ,0.064518,111.1008,33.85484,36.87796
sgpcmbeC1.c1,2007,07 7:30:00,31 ,0.105434,285.5973,116.0398,110.5146
sgpcmbeC1.c1,2007,07 8:30:00,31 ,0.355883,463.5951,241.1527,179.1014
sgpcmbeC1.c1,2007,07 9:30:00,31 ,1.327362,628.3656,352.8686,244.7269
sgpcmbeC1.c1,2007,0710:30:00,31 ,1.475983,766.9857,422.1238,273.6762
sgpcmbeC1.c1,2007,0711:30:00,31 ,1.347519,850.0134, 387.632,285.1686
sgpcmbeC1.c1,2007,0712:30:00,31 ,3.266663,874.6844,418.5906,294.4734
sgpcmbeC1.c1,2007,0713:30:00,31 ,       0,848.1663,372.3826,299.8468
sgpcmbeC1.c1,2007,0714:30:00,30 ,       0,757.0056,375.7221,269.1332
sgpcmbeC1.c1,2007,0715:30:00,31 ,1.122986,632.2632,351.3452,237.7412
sgpcmbeC1.c1,2007,0716:30:00,31 ,0.388245,477.2145,260.9491, 158.966
sgpcmbeC1.c1,2007,0717:30:00,31 ,0.115906,295.1519,177.6467, 101.029
sgpcmbeC1.c1,2007,0718:30:00,31 ,0.187767,148.1058,70.50863,47.37211
sgpcmbeC1.c1,2007,0719:30:00,31 ,0.162358,17.11636,6.314449,5.096429
sgpcmbeC1.c1,2007,0720:30:00,30 ,       0,0.855243, 0.13146,  0.1982
sgpcmbeC1.c1,2007,0721:30:00,31 ,       0,0.793538,0.048336, 0.15059
sgpcmbeC1.c1,2007,0722:30:00,31 ,       0,0.404017,0.028776,0.096255
sgpcmbeC1.c1,2007,0723:30:00,31 ,       0,0.502863, 0.03397,0.102169