datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,05 0:30:00,31 , 0.51488,26.35082,4.508882,5.320934
sgpcmbeC1.c1,2005,05 1:30:00,31 ,0.759132,22.05352,5.961141,6.059973
sgpcmbeC1.c1,2005,05 2:30:00,31 ,0.856391,18.19474,4.019306, 3.79311
sgpcmbeC1.c1,2005,05 3:30:00,31 ,0.575796,9.903909, 4.17833,3.002782
sgpcmbeC1.c1,2005,05 4:30:00,31 , 0.55759,26.70706,4.793835,5.695788
sgpcmbeC1.c1,2005,05 5:30:00,31 ,0.670589, 17.9802, 4.54314,4.730198
sgpcmbeC1.c1,2005,05 6:30:00,31 ,0.916871,28.33458,  5.3771,5.805018
sgpcmbeC1.c1,2005,05 7:30:00,31 ,1.003827,18.03853,4.844824,4.307319
sgpcmbeC1.c1,2005,05 8:30:00,31 ,0.843918,17.06028, 4.63898,3.917989
sgpcmbeC1.c1,2005,05 9:30:00,31 ,0.943412,13.31227,4.846063,3.623652
sgpcmbeC1.c1,2005,0510:30:00,31 , 1.33216,15.96132, 4.99107,3.593051
sgpcmbeC1.c1,2005,0511:30:00,30 ,0.875971,13.53619,4.054071,2.819527
sgpcmbeC1.c1,2005,0512:30:00,31 ,0.908719, 15.6838, 4.35074,3.972304
sgpcmbeC1.c1,2005,0513:30:00,31 ,0.736106,13.11014,3.773712,2.997776
sgpcmbeC1.c1,2005,0514:30:00,31 ,0.781888,15.78504,4.436611,3.635381
sgpcmbeC1.c1,2005,0515:30:00,31 ,0.906069,14.82378,4.178236,3.780329
sgpcmbeC1.c1,2005,0516:30:00,31 ,0.862244,15.96117,3.610924,3.652734
sgpcmbeC1.c1,2005,0517:30:00,31 ,0.678874,13.34582,3.946288,3.113367
sgpcmbeC1.c1,2005,0518:30:00,31 ,0.715055,16.88659,4.236478,3.983154
sgpcmbeC1.c1,2005,0519:30:00,31 ,0.843275,21.61621,4.685214,4.574626
sgpcmbeC1.c1,2005,0520:30:00,31 ,0.659968,14.02731,4.004742,3.921991
sgpcmbeC1.c1,2005,0521:30:00,31 ,0.863163,23.71175,4.306849,5.616845
sgpcmbeC1.c1,2005,0522:30:00,31 ,0.727759, 20.9334,4.579049,5.415009
sgpcmbeC1.c1,2005,0523:30:00,31 , 0.61643, 22.8406,4.630955,5.268285