datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,05 0:30:00,31 ,       0,0.019084,0.000616,0.003427
sgpcmbeC1.c1,2003,05 1:30:00,31 ,       0,0.001563, 0.00005,0.000281
sgpcmbeC1.c1,2003,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 5:30:00,31 ,0.013397,8.245807,2.822487,2.441911
sgpcmbeC1.c1,2003,05 6:30:00,31 ,0.280837,51.88586,24.42413,16.36525
sgpcmbeC1.c1,2003,05 7:30:00,31 , 0.01386,88.72246,52.11111,30.40193
sgpcmbeC1.c1,2003,05 8:30:00,31 ,2.870523,125.7608,82.06078,41.87832
sgpcmbeC1.c1,2003,05 9:30:00,31 , 15.6672,153.8307,106.9122,46.29133
sgpcmbeC1.c1,2003,0510:30:00,31 ,22.23035,174.3923, 130.257,49.08824
sgpcmbeC1.c1,2003,0511:30:00,31 , 29.3138,187.1013,135.9307,53.42259
sgpcmbeC1.c1,2003,0512:30:00,31 , 18.9772,  192.68,139.0868, 60.5957
sgpcmbeC1.c1,2003,0513:30:00,31 ,18.93068,183.8365,132.7519,51.60683
sgpcmbeC1.c1,2003,0514:30:00,31 ,23.44376,175.5407,128.1979,44.45941
sgpcmbeC1.c1,2003,0515:30:00,31 ,25.25701,  151.52, 113.862,37.29586
sgpcmbeC1.c1,2003,0516:30:00,31 ,2.801233, 121.458,86.82492,33.73978
sgpcmbeC1.c1,2003,0517:30:00,31 ,6.937356,86.29509,62.82614,20.74731
sgpcmbeC1.c1,2003,0518:30:00,31 ,1.559143,38.50025,25.59752,9.787874
sgpcmbeC1.c1,2003,0519:30:00,31 ,0.028206,7.869469,2.600066,2.042632
sgpcmbeC1.c1,2003,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0522:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0523:30:00,31 ,       0,0.006478,0.000209,0.001164