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 ,       0,40.91714,19.05182,13.44444
sgpcmbeC1.c1,1999,09 7:30:00,30 , 4.46173,119.5202,51.89949,28.44964
sgpcmbeC1.c1,1999,09 8:30:00,30 ,5.655751, 143.411,62.45903, 32.5098
sgpcmbeC1.c1,1999,09 9:30:00,30 ,6.752239,168.9654,70.84711,46.35077
sgpcmbeC1.c1,1999,0910:30:00,30 ,15.00346,179.9736,69.95919,  45.216
sgpcmbeC1.c1,1999,0911:30:00,30 ,9.988926,255.8481,100.5085,81.23221
sgpcmbeC1.c1,1999,0912:30:00,30 ,2.450085,281.0146,105.7777,91.39428
sgpcmbeC1.c1,1999,0913:30:00,30 ,9.224067,266.5304,117.6661,88.95658
sgpcmbeC1.c1,1999,0914:30:00,30 ,10.91064,295.1586,120.2836, 95.2746
sgpcmbeC1.c1,1999,0915:30:00,30 , 8.88519,260.2164,93.79142,66.13311
sgpcmbeC1.c1,1999,0916:30:00,30 ,7.835567,142.1989,75.28123,36.58748
sgpcmbeC1.c1,1999,0917:30:00,30 ,5.805516,99.87926,51.20102,25.11317
sgpcmbeC1.c1,1999,0918:30:00,30 ,       0,36.09529,15.25327,10.04084
sgpcmbeC1.c1,1999,0919:30:00,30 ,       0,0.691414,0.023047,0.126234
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