datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,08 0:30:00,4 ,       0,35.36045,10.04466,16.92109
sgpcmbeC1.c1,2005,08 1:30:00,4 ,       0,43.16425,12.35006,20.70886
sgpcmbeC1.c1,2005,08 2:30:00,5 ,       0, 49.2608,9.853482,22.02936
sgpcmbeC1.c1,2005,08 3:30:00,6 ,       0,32.83175,5.472127,13.40342
sgpcmbeC1.c1,2005,08 4:30:00,6 ,       0, 45.0677,7.576537, 18.3673
sgpcmbeC1.c1,2005,08 5:30:00,6 ,       0,63.85976,10.97583,25.91394
sgpcmbeC1.c1,2005,08 6:30:00,6 ,       0,67.90369,18.62598,29.67936
sgpcmbeC1.c1,2005,08 7:30:00,5 ,       0,114.2419,22.90694,51.05791
sgpcmbeC1.c1,2005,08 8:30:00,4 ,       0,219.9164,55.18976,109.8185
sgpcmbeC1.c1,2005,08 9:30:00,2 , 0.96085,112.4038,56.68233,78.80207
sgpcmbeC1.c1,2005,0810:30:00,4 ,0.429138,31.36101,9.074311,14.88501
sgpcmbeC1.c1,2005,0811:30:00,2 ,0.720567,1.304225,1.012396,0.412708
sgpcmbeC1.c1,2005,0812:30:00,4 ,       0,2.709365,1.073979,1.307597
sgpcmbeC1.c1,2005,0813:30:00,4 ,0.183917,37.07536,9.929511,18.11474
sgpcmbeC1.c1,2005,0814:30:00,5 ,       0,24.82965,6.208897,10.62707
sgpcmbeC1.c1,2005,0815:30:00,3 ,       0,1.109093,0.369698,0.640335
sgpcmbeC1.c1,2005,0816:30:00,2 ,       0,1.947472,0.973736,1.377071
sgpcmbeC1.c1,2005,0817:30:00,4 ,       0, 41.3236,10.62942,20.46899
sgpcmbeC1.c1,2005,0818:30:00,4 ,       0,131.2522,33.19596,65.37197
sgpcmbeC1.c1,2005,0819:30:00,4 ,0.803921, 17.7842,6.279636,7.929314
sgpcmbeC1.c1,2005,0820:30:00,4 ,0.085838,19.03952,5.202198,9.244715
sgpcmbeC1.c1,2005,0821:30:00,4 ,       0,23.32459,6.094329, 11.4911
sgpcmbeC1.c1,2005,0822:30:00,4 ,       0,15.53679,4.785174,7.303192
sgpcmbeC1.c1,2005,0823:30:00,4 ,       0,1.128746,0.528743,0.613306