datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,09 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 6:30:00,30 ,       0,25.64013,14.24195,6.012625
sgpcmbeC1.c1,2007,09 7:30:00,30 , 3.27019, 53.4977,23.74224,14.59641
sgpcmbeC1.c1,2007,09 8:30:00,30 ,2.329988, 68.5205,24.64032,19.71966
sgpcmbeC1.c1,2007,09 9:30:00,29 ,0.847259,102.3466,29.88523, 26.9119
sgpcmbeC1.c1,2007,0910:30:00,30 ,0.735605,80.38983,29.79668,25.17624
sgpcmbeC1.c1,2007,0911:30:00,30 ,0.848073,107.4948,34.81667,28.97046
sgpcmbeC1.c1,2007,0912:30:00,30 ,0.577426,142.0136,37.26197,32.70936
sgpcmbeC1.c1,2007,0913:30:00,30 ,0.664105,126.8808,41.11677,39.14611
sgpcmbeC1.c1,2007,0914:30:00,30 ,0.293945,98.70805,36.11082,28.45831
sgpcmbeC1.c1,2007,0915:30:00,30 ,0.585364,68.54269,25.37878,20.84822
sgpcmbeC1.c1,2007,0916:30:00,30 ,2.994199,80.95512,22.41029,19.68857
sgpcmbeC1.c1,2007,0917:30:00,30 , 3.74162,42.74769, 19.1144,9.375908
sgpcmbeC1.c1,2007,0918:30:00,29 , 4.99699,28.63399,11.76837,5.261299
sgpcmbeC1.c1,2007,0919:30:00,29 ,       0,0.608403,0.038502,0.128809
sgpcmbeC1.c1,2007,0920:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0921:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0922:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0923:30:00,29 ,       0,       0,       0,       0