datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,05 0:30:00,30 ,1.016533,4.340046,2.605167,0.895092
sgpcmbeC1.c1,2005,05 1:30:00,30 ,1.041744,4.825553,2.678194,1.002662
sgpcmbeC1.c1,2005,05 2:30:00,30 ,1.058356,7.309363,2.774783,1.247029
sgpcmbeC1.c1,2005,05 3:30:00,30 ,1.133927,6.925717,2.781195,1.217306
sgpcmbeC1.c1,2005,05 4:30:00,30 ,1.137685,6.106625,2.747548,1.129939
sgpcmbeC1.c1,2005,05 5:30:00,30 ,1.130828,7.822396,2.757994,1.297732
sgpcmbeC1.c1,2005,05 6:30:00,30 ,1.126166,6.301524,2.702877,1.133247
sgpcmbeC1.c1,2005,05 7:30:00,30 ,  1.0315,4.307798,2.639368,0.941587
sgpcmbeC1.c1,2005,05 8:30:00,30 ,0.968284, 4.44676,2.629426,0.916802
sgpcmbeC1.c1,2005,05 9:30:00,30 ,0.967657,7.542697,2.720759,1.219894
sgpcmbeC1.c1,2005,0510:30:00,30 ,0.960489, 5.46073,2.692317,0.989739
sgpcmbeC1.c1,2005,0511:30:00,31 ,0.962056,4.890675,2.736097,0.930899
sgpcmbeC1.c1,2005,0512:30:00,31 , 1.02641,4.057893, 2.69785,0.874288
sgpcmbeC1.c1,2005,0513:30:00,31 ,1.151824,4.048205,2.694488,0.846411
sgpcmbeC1.c1,2005,0514:30:00,31 ,1.176146,4.409656,2.724172,0.871034
sgpcmbeC1.c1,2005,0515:30:00,31 , 1.17152,6.610723,2.851476,1.106609
sgpcmbeC1.c1,2005,0516:30:00,30 ,1.120742,4.713378,2.768044,0.926574
sgpcmbeC1.c1,2005,0517:30:00,31 ,1.059152,7.266726, 2.95519,1.209601
sgpcmbeC1.c1,2005,0518:30:00,31 ,1.041559,4.943203,2.887729,1.004219
sgpcmbeC1.c1,2005,0519:30:00,30 , 0.95841,4.821351,2.737782,0.860682
sgpcmbeC1.c1,2005,0520:30:00,30 ,0.937778,4.571134,2.696067,0.835875
sgpcmbeC1.c1,2005,0521:30:00,30 ,0.958215,4.352085,2.653408,0.840572
sgpcmbeC1.c1,2005,0522:30:00,30 ,0.972874,5.177889,2.715388,0.929696
sgpcmbeC1.c1,2005,0523:30:00,30 ,0.988725,4.296988,2.633885,0.816959