datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,07 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 5:30:00,31 ,       0,15.54214,9.340587,4.383012
sgpcmbeC1.c1,2003,07 6:30:00,31 ,13.84402,106.0398,63.86145,19.88799
sgpcmbeC1.c1,2003,07 7:30:00,31 ,56.34343,177.5675,114.8678,32.26219
sgpcmbeC1.c1,2003,07 8:30:00,31 ,73.01039,265.3915,148.0786, 45.9928
sgpcmbeC1.c1,2003,07 9:30:00,31 ,81.04099,411.2376,187.2353,90.66356
sgpcmbeC1.c1,2003,0710:30:00,31 ,86.58051,448.7862,192.5858,86.39961
sgpcmbeC1.c1,2003,0711:30:00,31 ,86.75707,373.0383,207.7633,91.10677
sgpcmbeC1.c1,2003,0712:30:00,31 ,86.48169,552.7867,219.2253,110.5795
sgpcmbeC1.c1,2003,0713:30:00,31 ,86.61779,441.9151,213.1274, 86.8303
sgpcmbeC1.c1,2003,0714:30:00,31 ,85.24909,462.6001,216.5072,86.59222
sgpcmbeC1.c1,2003,0715:30:00,31 ,82.17448,361.9178,190.4118,75.40834
sgpcmbeC1.c1,2003,0716:30:00,31 ,78.78265,294.3497,157.2002, 51.1953
sgpcmbeC1.c1,2003,0717:30:00,31 ,72.39223,213.0105,122.3887,30.48941
sgpcmbeC1.c1,2003,0718:30:00,31 ,41.06836,128.7847,76.46907,21.01087
sgpcmbeC1.c1,2003,0719:30:00,31 ,4.762609,39.34422,16.54573,6.613789
sgpcmbeC1.c1,2003,0720:30:00,31 ,       0,0.352995,0.011387,  0.0634
sgpcmbeC1.c1,2003,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0723:30:00,31 ,       0,       0,       0,       0