datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,09 0:30:00,26 ,       0,1.484889,0.082327,0.298299
sgpcmbeC1.c1,2005,09 1:30:00,26 ,       0,1.373663,0.100124,0.347522
sgpcmbeC1.c1,2005,09 2:30:00,26 ,       0,1.264152,0.104334,0.339881
sgpcmbeC1.c1,2005,09 3:30:00,26 ,       0,1.827185,0.137333,0.404794
sgpcmbeC1.c1,2005,09 4:30:00,26 ,       0,1.795706,0.150829,0.402604
sgpcmbeC1.c1,2005,09 5:30:00,26 ,       0,2.108502,0.156538, 0.44119
sgpcmbeC1.c1,2005,09 6:30:00,30 ,0.006447, 20.4387,7.206374,5.675751
sgpcmbeC1.c1,2005,09 7:30:00,30 ,0.000175,162.0214,84.08571,52.47463
sgpcmbeC1.c1,2005,09 8:30:00,30 ,0.575577,347.5628,204.9747,106.4736
sgpcmbeC1.c1,2005,09 9:30:00,29 , 30.2162,530.8034,320.6184,156.2155
sgpcmbeC1.c1,2005,0910:30:00,30 ,39.55164,670.2174,437.9753,186.2567
sgpcmbeC1.c1,2005,0911:30:00,30 ,52.76889,  760.97,522.7511, 190.272
sgpcmbeC1.c1,2005,0912:30:00,30 ,4.556335,790.6317,542.0871,216.4057
sgpcmbeC1.c1,2005,0913:30:00,30 ,1.722534,752.7823,516.0264, 216.816
sgpcmbeC1.c1,2005,0914:30:00,30 ,0.064682,654.2124,454.4998,160.8307
sgpcmbeC1.c1,2005,0915:30:00,30 ,0.138931,506.1934, 334.617,153.1333
sgpcmbeC1.c1,2005,0916:30:00,30 , 0.00267,332.6772,194.8606,105.6995
sgpcmbeC1.c1,2005,0917:30:00,30 ,0.008955,150.0255,75.59952,43.61905
sgpcmbeC1.c1,2005,0918:30:00,30 ,0.001059,19.96106,5.145834,6.094845
sgpcmbeC1.c1,2005,0919:30:00,28 ,       0,2.779198,0.171506,0.565096
sgpcmbeC1.c1,2005,0920:30:00,27 ,       0, 1.82544,0.083075,0.352963
sgpcmbeC1.c1,2005,0921:30:00,25 ,       0,0.624399,0.037111,0.136547
sgpcmbeC1.c1,2005,0922:30:00,27 ,       0,3.028362,0.190547,0.653264
sgpcmbeC1.c1,2005,0923:30:00,26 ,       0,1.532047, 0.12956,0.359428