datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,07 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 5:30:00,31 ,       0,19.90648,10.11316,4.322479
sgpcmbeC1.c1,1999,07 6:30:00,31 ,       0,  30.751,15.02571,6.742655
sgpcmbeC1.c1,1999,07 7:30:00,31 ,2.534468,49.54676,13.55469,13.06964
sgpcmbeC1.c1,1999,07 8:30:00,31 ,1.461332,46.43969,11.70427,12.44225
sgpcmbeC1.c1,1999,07 9:30:00,31 ,1.208891,97.82954,18.49037,26.47818
sgpcmbeC1.c1,1999,0710:30:00,31 ,1.529769, 137.797,19.02479,29.24846
sgpcmbeC1.c1,1999,0711:30:00,31 ,1.784079,89.48803,20.53271,24.41127
sgpcmbeC1.c1,1999,0712:30:00,31 ,1.350273,76.92127,24.05064,18.37663
sgpcmbeC1.c1,1999,0713:30:00,31 ,1.658579,51.62743,21.65728, 16.5951
sgpcmbeC1.c1,1999,0714:30:00,31 ,1.344097,117.3637,24.73713,24.02876
sgpcmbeC1.c1,1999,0715:30:00,31 ,1.467831,155.4295,21.33054,28.93603
sgpcmbeC1.c1,1999,0716:30:00,31 ,2.794387, 75.5877,19.42345,20.21172
sgpcmbeC1.c1,1999,0717:30:00,31 ,3.741717,42.04289,13.31339, 10.2291
sgpcmbeC1.c1,1999,0718:30:00,31 ,8.205004,34.09947,15.16157,6.659524
sgpcmbeC1.c1,1999,0719:30:00,31 ,5.200549,20.76654,12.95145,3.084586
sgpcmbeC1.c1,1999,0720:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0723:30:00,31 ,       0,       0,       0,       0