datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,04 0:30:00,30 ,       0,1.067591,0.035586,0.194915
sgpcmbeC1.c1,2001,04 1:30:00,29 ,       0,1.974759,0.070349,0.366471
sgpcmbeC1.c1,2001,04 2:30:00,30 ,       0,0.570113,0.019004,0.104088
sgpcmbeC1.c1,2001,04 3:30:00,30 ,       0,0.156135,0.005204,0.028506
sgpcmbeC1.c1,2001,04 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,04 5:30:00,30 ,       0,3.572443,    0.73,1.145825
sgpcmbeC1.c1,2001,04 6:30:00,30 ,2.922061,103.4732,48.66621,30.66296
sgpcmbeC1.c1,2001,04 7:30:00,30 ,11.60898,303.4189,178.8281,96.08295
sgpcmbeC1.c1,2001,04 8:30:00,30 ,32.98556,513.9677, 331.456,175.4677
sgpcmbeC1.c1,2001,04 9:30:00,30 , 33.8316, 699.721,456.4365,249.6985
sgpcmbeC1.c1,2001,0410:30:00,30 ,48.30121, 849.704,546.0437,292.2573
sgpcmbeC1.c1,2001,0411:30:00,30 ,125.7305,949.0998,614.0841,311.1042
sgpcmbeC1.c1,2001,0412:30:00,30 ,127.2232,981.5356,625.6962,306.7758
sgpcmbeC1.c1,2001,0413:30:00,30 ,107.7068,945.0002,617.8988,264.3754
sgpcmbeC1.c1,2001,0414:30:00,30 ,81.86514,850.5516,  594.45,228.6212
sgpcmbeC1.c1,2001,0415:30:00,30 ,112.3417,699.5395,524.9269,161.2358
sgpcmbeC1.c1,2001,0416:30:00,30 ,84.33504,507.2745, 357.394,129.8954
sgpcmbeC1.c1,2001,0417:30:00,30 ,54.87032,289.6078,202.6566,70.08269
sgpcmbeC1.c1,2001,0418:30:00,30 ,10.75184,87.56857,51.57361,24.25514
sgpcmbeC1.c1,2001,0419:30:00,29 ,       0, 2.77479,0.600148,0.766209
sgpcmbeC1.c1,2001,0420:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0421:30:00,29 ,       0,0.384073,0.013244,0.071321
sgpcmbeC1.c1,2001,0422:30:00,30 ,       0,1.889286,0.062976,0.344935
sgpcmbeC1.c1,2001,0423:30:00,30 ,       0,2.199138,0.073305,0.401506