datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,04 0:30:00,30 ,  0.2631,5.626735, 1.81446,1.274833
sgpcmbeC1.c1,2005,04 1:30:00,30 ,  0.5053,5.199626,1.983291,1.175868
sgpcmbeC1.c1,2005,04 2:30:00,30 , 0.54753, 5.05781,2.128692,1.378407
sgpcmbeC1.c1,2005,04 3:30:00,30 ,0.573456,5.946141,2.258746,1.664619
sgpcmbeC1.c1,2005,04 4:30:00,30 ,0.603059, 8.03405,2.092476,1.556965
sgpcmbeC1.c1,2005,04 5:30:00,30 ,0.234386,6.925603,1.913176,1.655434
sgpcmbeC1.c1,2005,04 6:30:00,30 ,0.346014,10.01888,3.842035,2.752439
sgpcmbeC1.c1,2005,04 7:30:00,30 ,0.566951,12.06584,5.329157,3.446977
sgpcmbeC1.c1,2005,04 8:30:00,30 ,0.812338,12.32618,6.476031,3.373405
sgpcmbeC1.c1,2005,04 9:30:00,30 ,1.251746,12.44392,6.852774,2.729622
sgpcmbeC1.c1,2005,0410:30:00,30 ,0.575635,13.62292,6.461896,2.821053
sgpcmbeC1.c1,2005,0411:30:00,30 ,0.760298,12.90329,6.230177,2.663029
sgpcmbeC1.c1,2005,0412:30:00,30 , 1.20875,17.87114,7.529629, 4.38266
sgpcmbeC1.c1,2005,0413:30:00,30 , 0.81684,14.62954,5.952569,3.135827
sgpcmbeC1.c1,2005,0414:30:00,30 ,1.332443,11.53693,5.599424,2.712257
sgpcmbeC1.c1,2005,0415:30:00,30 ,1.119102,10.11815,5.438108, 2.29649
sgpcmbeC1.c1,2005,0416:30:00,30 ,2.446851,12.78425, 5.39528,2.565835
sgpcmbeC1.c1,2005,0417:30:00,30 ,0.833915,   8.945, 5.13997,2.040535
sgpcmbeC1.c1,2005,0418:30:00,30 ,0.801861,14.40088,6.534197,3.726501
sgpcmbeC1.c1,2005,0419:30:00,30 ,0.812751,10.08444, 2.89517,1.917825
sgpcmbeC1.c1,2005,0420:30:00,30 , 0.50179,9.556308,2.536245,1.812679
sgpcmbeC1.c1,2005,0421:30:00,30 ,0.463819,7.790312,2.338346,1.784268
sgpcmbeC1.c1,2005,0422:30:00,30 ,0.492625,5.304099,2.041211,1.191098
sgpcmbeC1.c1,2005,0423:30:00,30 , 0.36706,6.700751,1.793997,1.446459