datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,05 0:30:00,23 ,       0,472.5565,54.12643,104.0849
sgpcmbeC1.c1,2002,05 1:30:00,22 ,       0,349.3708,51.21476,84.58054
sgpcmbeC1.c1,2002,05 2:30:00,22 ,       0,338.9127,46.07165,78.70683
sgpcmbeC1.c1,2002,05 3:30:00,22 ,       0, 344.376,45.89045,90.13279
sgpcmbeC1.c1,2002,05 4:30:00,23 ,       0,443.5286,42.00295,100.6436
sgpcmbeC1.c1,2002,05 5:30:00,23 ,       0,420.8043,41.30974, 97.5842
sgpcmbeC1.c1,2002,05 6:30:00,23 ,       0,565.2551,48.21351,122.0288
sgpcmbeC1.c1,2002,05 7:30:00,23 ,       0,731.3233,66.61478,184.0745
sgpcmbeC1.c1,2002,05 8:30:00,24 ,       0,354.6858,31.44499,73.47085
sgpcmbeC1.c1,2002,05 9:30:00,24 ,       0,337.0061,35.50161,76.84853
sgpcmbeC1.c1,2002,0510:30:00,24 ,       0,323.6728,43.84261,90.04037
sgpcmbeC1.c1,2002,0511:30:00,24 ,       0,508.3592,56.09441,122.9444
sgpcmbeC1.c1,2002,0512:30:00,24 ,       0,568.6316,67.90378,130.2323
sgpcmbeC1.c1,2002,0513:30:00,23 ,       0,788.2579,69.65047,170.2238
sgpcmbeC1.c1,2002,0514:30:00,23 ,       0,550.5813,44.61283, 119.797
sgpcmbeC1.c1,2002,0515:30:00,23 ,       0,451.5524,39.36156,96.97116
sgpcmbeC1.c1,2002,0516:30:00,24 ,       0,408.0844, 35.5325,84.06103
sgpcmbeC1.c1,2002,0517:30:00,24 ,       0,436.6807,33.97341, 93.3814
sgpcmbeC1.c1,2002,0518:30:00,22 ,       0,584.3912,46.18441,125.2046
sgpcmbeC1.c1,2002,0519:30:00,23 ,       0,553.4725,59.58092,139.5591
sgpcmbeC1.c1,2002,0520:30:00,23 ,       0,270.8873, 42.2442,77.45314
sgpcmbeC1.c1,2002,0521:30:00,23 ,       0,197.3796,29.92798, 54.7757
sgpcmbeC1.c1,2002,0522:30:00,23 ,       0, 177.367,24.26709,41.67094
sgpcmbeC1.c1,2002,0523:30:00,22 ,       0,440.4688, 39.9046,96.96539