datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,07 0:30:00,31 ,       0,0.801917,0.051998,0.179982
sgpcmbeC1.c1,2005,07 1:30:00,31 ,       0,0.469685,0.026642, 0.09362
sgpcmbeC1.c1,2005,07 2:30:00,31 ,       0,0.234882,0.021138,0.065804
sgpcmbeC1.c1,2005,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,07 5:30:00,31 ,       0,19.76515,10.98682,4.801856
sgpcmbeC1.c1,2005,07 6:30:00,31 , 7.02912,124.6842,69.95009,25.80514
sgpcmbeC1.c1,2005,07 7:30:00,29 ,57.15815,212.1826,125.5325, 41.6939
sgpcmbeC1.c1,2005,07 8:30:00,29 ,65.97887,313.7725,172.7682,72.09281
sgpcmbeC1.c1,2005,07 9:30:00,29 ,73.18556,371.5034,201.5733,87.60651
sgpcmbeC1.c1,2005,0710:30:00,29 ,77.60963,443.5934,227.1518,103.4459
sgpcmbeC1.c1,2005,0711:30:00,29 ,79.89672,486.8047,227.2205,102.5672
sgpcmbeC1.c1,2005,0712:30:00,30 ,82.39178,805.9835,243.4669,143.5615
sgpcmbeC1.c1,2005,0713:30:00,31 ,86.06541,862.0259,235.4521,143.3395
sgpcmbeC1.c1,2005,0714:30:00,31 ,83.82299, 712.812,211.4325,122.3809
sgpcmbeC1.c1,2005,0715:30:00,31 , 81.8943,   656.3, 190.066,108.6509
sgpcmbeC1.c1,2005,0716:30:00,30 ,41.40625, 261.894,142.8528,55.44608
sgpcmbeC1.c1,2005,0717:30:00,30 ,17.66718,257.6285,111.8394,47.43288
sgpcmbeC1.c1,2005,0718:30:00,30 ,21.57986, 149.048,70.46653,27.78418
sgpcmbeC1.c1,2005,0719:30:00,31 ,1.643218,43.65771,21.85964,10.59268
sgpcmbeC1.c1,2005,0720:30:00,31 ,       0,1.005948,0.063687,0.199622
sgpcmbeC1.c1,2005,0721:30:00,31 ,       0,0.337062,0.026376,0.083208
sgpcmbeC1.c1,2005,0722:30:00,31 ,       0,0.226578,0.013883,0.049283
sgpcmbeC1.c1,2005,0723:30:00,31 ,       0,0.564212,0.042658,0.123329