datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,07 0:30:00,31 ,       0,0.129452,0.006297,0.025723
sgpcmbeC1.c1,1997,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,07 2:30:00,31 ,       0,0.089596,0.004077, 0.01664
sgpcmbeC1.c1,1997,07 3:30:00,31 ,       0,0.193677,0.006248,0.034785
sgpcmbeC1.c1,1997,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,07 5:30:00,31 ,0.054853,9.118513,3.576393,2.699995
sgpcmbeC1.c1,1997,07 6:30:00,31 ,0.257701,17.28132,10.27367,4.378611
sgpcmbeC1.c1,1997,07 7:30:00,30 ,0.483092,40.62065,13.40954, 8.84145
sgpcmbeC1.c1,1997,07 8:30:00,31 ,1.594701,34.28432,12.93283,8.473361
sgpcmbeC1.c1,1997,07 9:30:00,31 ,0.855327,30.98541,11.42576,8.143635
sgpcmbeC1.c1,1997,0710:30:00,31 ,2.594539,45.89472,16.67807, 13.6414
sgpcmbeC1.c1,1997,0711:30:00,31 ,0.974431,68.90889, 21.5121,19.31155
sgpcmbeC1.c1,1997,0712:30:00,31 ,0.408133,48.00272,18.24402,16.99014
sgpcmbeC1.c1,1997,0713:30:00,31 ,0.947085,55.22149,21.07544,18.94066
sgpcmbeC1.c1,1997,0714:30:00,31 ,1.914056,47.27594,15.59637,13.81438
sgpcmbeC1.c1,1997,0715:30:00,31 ,4.437716,47.00087,15.71747,11.36092
sgpcmbeC1.c1,1997,0716:30:00,31 ,4.780443,41.57372,14.13838,  9.3328
sgpcmbeC1.c1,1997,0717:30:00,31 ,0.783906,31.72253,14.78109,8.247598
sgpcmbeC1.c1,1997,0718:30:00,31 ,1.886039,24.23183,11.75527,5.206419
sgpcmbeC1.c1,1997,0719:30:00,31 ,1.980466,11.79241,6.098773, 2.76737
sgpcmbeC1.c1,1997,0720:30:00,31 ,       0,0.171541, 0.00761,0.032544
sgpcmbeC1.c1,1997,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0722:30:00,31 ,       0,0.161422,0.005207,0.028992
sgpcmbeC1.c1,1997,0723:30:00,31 ,       0,0.195295,0.009768,0.039402