datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,09 0:30:00,30 ,       0,0.167439,0.005581, 0.03057
sgpcmbeC1.c1,2002,09 1:30:00,30 ,       0,0.001729,0.000058,0.000316
sgpcmbeC1.c1,2002,09 2:30:00,30 ,       0,0.136538,0.004551,0.024928
sgpcmbeC1.c1,2002,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 6:30:00,30 ,0.360366,11.83524,7.299937,3.141531
sgpcmbeC1.c1,2002,09 7:30:00,30 ,1.377722,24.21339,14.34955,4.844798
sgpcmbeC1.c1,2002,09 8:30:00,30 ,1.922585,29.54138,15.25783,6.616862
sgpcmbeC1.c1,2002,09 9:30:00,30 ,7.251507,39.88055,15.39389,  10.373
sgpcmbeC1.c1,2002,0910:30:00,30 ,4.714407,39.04541,13.16758,12.14896
sgpcmbeC1.c1,2002,0911:30:00,30 ,1.258139, 62.3143,17.25619,18.34351
sgpcmbeC1.c1,2002,0912:30:00,30 ,0.381255,88.50398,23.54549,23.04634
sgpcmbeC1.c1,2002,0913:30:00,30 ,2.875196,68.25341,21.18412,19.82989
sgpcmbeC1.c1,2002,0914:30:00,30 ,4.557053,58.35719,21.02072,17.32354
sgpcmbeC1.c1,2002,0915:30:00,30 ,6.926241,47.08363, 16.6233,10.85363
sgpcmbeC1.c1,2002,0916:30:00,30 ,1.739474, 37.1958,14.75991,8.196814
sgpcmbeC1.c1,2002,0917:30:00,30 ,1.209191,20.98405,12.84776,4.247205
sgpcmbeC1.c1,2002,0918:30:00,30 ,       0,10.58447,4.475601, 3.07073
sgpcmbeC1.c1,2002,0919:30:00,30 ,       0,  1.1784,0.048534,0.219327
sgpcmbeC1.c1,2002,0920:30:00,30 ,       0,0.852437,0.028415,0.155633
sgpcmbeC1.c1,2002,0921:30:00,30 ,       0,0.144467,0.005326,0.026428
sgpcmbeC1.c1,2002,0922:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0923:30:00,30 ,       0,0.258199,0.010335,0.047761