datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,09 0:30:00,21 ,       0,54.07403,6.592509,11.81151
sgpcmbeC1.c1,2004,09 1:30:00,22 ,       0,97.96661,10.49494,21.15276
sgpcmbeC1.c1,2004,09 2:30:00,22 ,       0,83.71636,12.08362,21.22289
sgpcmbeC1.c1,2004,09 3:30:00,20 ,       0,133.8256,14.50023,31.17172
sgpcmbeC1.c1,2004,09 4:30:00,22 ,       0, 111.608,13.46611,25.54331
sgpcmbeC1.c1,2004,09 5:30:00,22 ,       0,229.5036,17.00534,48.21161
sgpcmbeC1.c1,2004,09 6:30:00,21 ,       0,102.2874,  16.431,29.65181
sgpcmbeC1.c1,2004,09 7:30:00,22 ,       0,325.8224,17.66818,68.92257
sgpcmbeC1.c1,2004,09 8:30:00,23 ,       0,163.0376,9.771274,33.60372
sgpcmbeC1.c1,2004,09 9:30:00,21 ,       0,99.30179,8.198225,21.31658
sgpcmbeC1.c1,2004,0910:30:00,20 ,       0, 57.3938,6.074435,12.45673
sgpcmbeC1.c1,2004,0911:30:00,20 ,       0,87.45834,7.506553,19.02061
sgpcmbeC1.c1,2004,0912:30:00,19 ,       0,58.84053,6.633366,13.40929
sgpcmbeC1.c1,2004,0913:30:00,19 ,       0,98.89601,9.061235,22.37648
sgpcmbeC1.c1,2004,0914:30:00,19 ,       0,183.8486,14.03462,41.65105
sgpcmbeC1.c1,2004,0915:30:00,19 ,       0,47.68594,7.523798,12.27242
sgpcmbeC1.c1,2004,0916:30:00,19 ,       0,38.84396,6.007098,11.69166
sgpcmbeC1.c1,2004,0917:30:00,19 ,       0,20.79014,3.981363,5.727483
sgpcmbeC1.c1,2004,0918:30:00,20 ,       0,27.16983,5.364419,6.636776
sgpcmbeC1.c1,2004,0919:30:00,22 ,       0,23.86241,5.670569,6.966681
sgpcmbeC1.c1,2004,0920:30:00,22 ,       0,75.84762,6.697457,15.90692
sgpcmbeC1.c1,2004,0921:30:00,21 ,       0,48.10371,  5.7153,10.47622
sgpcmbeC1.c1,2004,0922:30:00,21 ,       0,43.19989,6.894813,11.11026
sgpcmbeC1.c1,2004,0923:30:00,20 ,       0,89.23414,8.431617,19.45684