datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 6:30:00,30 ,       0,14.47401,5.436192,4.830163
sgpcmbeC1.c1,1999,09 7:30:00,30 ,0.781485,59.72095,29.60987,18.75751
sgpcmbeC1.c1,1999,09 8:30:00,30 ,5.422478,103.2536,57.96439,31.92959
sgpcmbeC1.c1,1999,09 9:30:00,30 ,7.655951,137.7637,84.00702,  42.091
sgpcmbeC1.c1,1999,0910:30:00,30 ,8.964538,161.4771,  97.689,48.52302
sgpcmbeC1.c1,1999,0911:30:00,30 ,8.106297,175.1607, 106.666,47.24008
sgpcmbeC1.c1,1999,0912:30:00,30 ,12.12032,178.8422,107.9134, 49.0466
sgpcmbeC1.c1,1999,0913:30:00,30 ,10.82876, 170.715,102.8381,45.70816
sgpcmbeC1.c1,1999,0914:30:00,30 ,7.862655,158.2533,98.52031,40.43332
sgpcmbeC1.c1,1999,0915:30:00,30 , 6.69475,135.6678,83.73067,33.15226
sgpcmbeC1.c1,1999,0916:30:00,30 ,3.632933,101.2499,56.36479,26.67683
sgpcmbeC1.c1,1999,0917:30:00,30 ,0.627827, 54.9099,25.20761,14.28012
sgpcmbeC1.c1,1999,0918:30:00,30 ,       0,14.29013, 3.81207,4.150745
sgpcmbeC1.c1,1999,0919:30:00,30 ,       0, 0.06496,0.002165, 0.01186
sgpcmbeC1.c1,1999,0920:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0921:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0922:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0923:30:00,30 ,       0,       0,       0,       0