datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,09 0:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,09 1:30:00,27 ,       0,0.255274,0.009455,0.049127
sgpcmbeC1.c1,1998,09 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,09 3:30:00,27 ,       0,0.516912,0.019145, 0.09948
sgpcmbeC1.c1,1998,09 4:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,09 5:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,09 6:30:00,28 ,2.065372,24.85986,15.06557,5.661241
sgpcmbeC1.c1,1998,09 7:30:00,28 ,5.541176,56.87759,20.54137,11.50585
sgpcmbeC1.c1,1998,09 8:30:00,28 ,2.430381,58.67125,16.08004,13.86829
sgpcmbeC1.c1,1998,09 9:30:00,28 ,1.847033,119.3456,20.47931,27.20163
sgpcmbeC1.c1,1998,0910:30:00,28 ,1.504695,92.73131,27.20658,27.65585
sgpcmbeC1.c1,1998,0911:30:00,28 ,1.676199,158.7226,32.06983,35.60608
sgpcmbeC1.c1,1998,0912:30:00,28 , 1.64062, 96.6318,33.58965,29.89779
sgpcmbeC1.c1,1998,0913:30:00,28 ,1.435551,82.11494, 29.3736,25.61707
sgpcmbeC1.c1,1998,0914:30:00,28 ,2.725446,160.5657,36.79179,39.27831
sgpcmbeC1.c1,1998,0915:30:00,28 ,1.904871, 150.083,29.67568,31.66644
sgpcmbeC1.c1,1998,0916:30:00,28 ,1.846147,65.71636,23.05125,19.15829
sgpcmbeC1.c1,1998,0917:30:00,28 ,6.606865,32.21638,18.06394,6.503392
sgpcmbeC1.c1,1998,0918:30:00,28 ,       0,21.38784,11.07237,5.726218
sgpcmbeC1.c1,1998,0919:30:00,28 ,       0,0.648769, 0.02317,0.122606
sgpcmbeC1.c1,1998,0920:30:00,27 ,       0,0.533111,0.019745,0.102597
sgpcmbeC1.c1,1998,0921:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0922:30:00,27 ,       0,0.721484,0.026722, 0.13885
sgpcmbeC1.c1,1998,0923:30:00,26 ,       0,       0,       0,       0