datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,07 0:30:00,31 ,       0,0.130168,0.004488,0.023381
sgpcmbeC1.c1,1998,07 1:30:00,31 ,       0,0.270393,0.009681,0.048679
sgpcmbeC1.c1,1998,07 2:30:00,31 ,       0,0.105735,0.005561,0.022109
sgpcmbeC1.c1,1998,07 3:30:00,31 ,       0,0.171085,0.005716,0.030711
sgpcmbeC1.c1,1998,07 4:30:00,31 ,       0,0.351063,0.011765,0.063019
sgpcmbeC1.c1,1998,07 5:30:00,31 ,0.000111,6.503181,2.596263,2.011241
sgpcmbeC1.c1,1998,07 6:30:00,31 ,0.010708,45.93029,23.88333,14.70096
sgpcmbeC1.c1,1998,07 7:30:00,31 ,1.534366,88.82325,55.52987,29.34372
sgpcmbeC1.c1,1998,07 8:30:00,31 ,9.412648,122.5775, 84.8243,36.12863
sgpcmbeC1.c1,1998,07 9:30:00,31 ,17.15345,146.1118,111.3505,38.30906
sgpcmbeC1.c1,1998,0710:30:00,31 , 31.8596,163.7086,133.2965,33.18324
sgpcmbeC1.c1,1998,0711:30:00,31 ,57.23286,169.0792,145.4003,24.31493
sgpcmbeC1.c1,1998,0712:30:00,31 , 126.569,175.7786,156.5173,11.83996
sgpcmbeC1.c1,1998,0713:30:00,31 ,114.4149, 168.342,147.8103,13.91738
sgpcmbeC1.c1,1998,0714:30:00,31 ,71.72119,165.1929,139.5224,17.29571
sgpcmbeC1.c1,1998,0715:30:00,31 ,81.07188,138.8813,119.9715,15.12206
sgpcmbeC1.c1,1998,0716:30:00,31 ,11.87947,124.0197, 96.3498,26.61071
sgpcmbeC1.c1,1998,0717:30:00,31 ,5.935781,92.94263,68.20336,20.12482
sgpcmbeC1.c1,1998,0718:30:00,31 ,6.004706, 50.2929,34.98226, 11.6309
sgpcmbeC1.c1,1998,0719:30:00,31 ,       0,12.41966,5.945821,3.248946
sgpcmbeC1.c1,1998,0720:30:00,31 ,       0,0.071972,0.002322,0.012926
sgpcmbeC1.c1,1998,0721:30:00,31 ,       0,0.140281,0.004525,0.025195
sgpcmbeC1.c1,1998,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0723:30:00,31 ,       0,       0,       0,       0