datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,07 0:30:00,31 ,       0,0.265269,0.013907,0.051486
sgpcmbeC1.c1,1998,07 1:30:00,31 ,       0,0.402079,0.030498,0.093101
sgpcmbeC1.c1,1998,07 2:30:00,31 ,       0,0.240212,0.018548,0.061451
sgpcmbeC1.c1,1998,07 3:30:00,31 ,       0,0.446514, 0.01892,0.081467
sgpcmbeC1.c1,1998,07 4:30:00,31 ,       0,0.675564,0.023487,0.121387
sgpcmbeC1.c1,1998,07 5:30:00,31 ,0.000818,7.103527,3.112088,2.203643
sgpcmbeC1.c1,1998,07 6:30:00,31 ,0.060573,18.00324,8.651264,5.206555
sgpcmbeC1.c1,1998,07 7:30:00,31 ,0.434534,30.63941,11.20313,6.278187
sgpcmbeC1.c1,1998,07 8:30:00,31 , 3.78212,38.37589,14.27129,9.796837
sgpcmbeC1.c1,1998,07 9:30:00,31 ,4.875363,46.49521,15.45941,12.06515
sgpcmbeC1.c1,1998,0710:30:00,31 ,2.246022,43.10831,15.46519,13.05688
sgpcmbeC1.c1,1998,0711:30:00,31 ,0.803796,55.07044,19.31312, 15.8636
sgpcmbeC1.c1,1998,0712:30:00,31 , 0.75504,49.76391,20.86731,15.79554
sgpcmbeC1.c1,1998,0713:30:00,31 ,1.558786,54.87597,22.95335, 17.0167
sgpcmbeC1.c1,1998,0714:30:00,31 ,3.289538,51.19128,20.94871,15.49842
sgpcmbeC1.c1,1998,0715:30:00,31 , 4.70476,47.92491,24.02314,14.76193
sgpcmbeC1.c1,1998,0716:30:00,31 ,6.430586,41.22401,17.57173,11.20376
sgpcmbeC1.c1,1998,0717:30:00,31 ,1.964595, 41.7439,16.32002,8.448355
sgpcmbeC1.c1,1998,0718:30:00,31 ,0.730658,22.66849,12.40749,4.223765
sgpcmbeC1.c1,1998,0719:30:00,31 ,       0,10.08036,5.353137,2.437804
sgpcmbeC1.c1,1998,0720:30:00,31 ,       0,0.673005,0.030035,0.128007
sgpcmbeC1.c1,1998,0721:30:00,31 ,       0,0.449745,0.014508,0.080777
sgpcmbeC1.c1,1998,0722:30:00,31 ,       0,0.167505,0.006153,0.030152
sgpcmbeC1.c1,1998,0723:30:00,31 ,       0,       0,       0,       0