datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,07 0:30:00,31 ,       0,0.001197,0.000039,0.000215
sgpcmbeC1.c1,2002,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 5:30:00,31 ,       0,5.430723,2.468628,1.362841
sgpcmbeC1.c1,2002,07 6:30:00,31 ,1.014283,40.18896,28.75254,10.79395
sgpcmbeC1.c1,2002,07 7:30:00,31 ,9.003533, 86.0592, 63.1597,23.10702
sgpcmbeC1.c1,2002,07 8:30:00,31 ,9.123311,128.7349,97.39234,35.79793
sgpcmbeC1.c1,2002,07 9:30:00,31 ,37.23222, 158.971,126.6429,37.34756
sgpcmbeC1.c1,2002,0710:30:00,31 ,49.87951,178.4727,146.0381,36.56902
sgpcmbeC1.c1,2002,0711:30:00,31 ,38.14987, 192.937,158.1551,35.08889
sgpcmbeC1.c1,2002,0712:30:00,31 ,27.22379,200.2354,162.4816,40.99627
sgpcmbeC1.c1,2002,0713:30:00,31 ,19.22912,194.3622,151.9258,40.63594
sgpcmbeC1.c1,2002,0714:30:00,31 ,32.38433,182.4208,139.4003,42.95826
sgpcmbeC1.c1,2002,0715:30:00,31 ,57.60925,161.0393,128.0206,29.35996
sgpcmbeC1.c1,2002,0716:30:00,31 ,41.81295,133.2578,104.1517,26.07578
sgpcmbeC1.c1,2002,0717:30:00,31 ,1.808643,92.11071,66.68777,21.76917
sgpcmbeC1.c1,2002,0718:30:00,31 ,0.040603,56.41057,33.87359,12.14541
sgpcmbeC1.c1,2002,0719:30:00,31 ,       0,9.844131,5.060773,2.759154
sgpcmbeC1.c1,2002,0720:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0723:30:00,31 ,       0,       0,       0,       0