datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,08 0:30:00,28 ,1.499453,5.082614,3.444588,0.831378
sgpcmbeC1.c1,2004,08 1:30:00,28 ,  1.4039,5.291801,3.455372,0.840475
sgpcmbeC1.c1,2004,08 2:30:00,27 ,1.531275,5.126956,3.445224,0.824494
sgpcmbeC1.c1,2004,08 3:30:00,26 ,1.615054,5.065899,3.407346,0.804446
sgpcmbeC1.c1,2004,08 4:30:00,27 ,1.653022,5.118784,3.424103,0.787422
sgpcmbeC1.c1,2004,08 5:30:00,26 ,1.681973,5.082404,3.357978,0.729573
sgpcmbeC1.c1,2004,08 6:30:00,27 ,1.700647, 5.81546,3.467609,0.836794
sgpcmbeC1.c1,2004,08 7:30:00,30 ,1.676352,5.770714,3.424744,0.809082
sgpcmbeC1.c1,2004,08 8:30:00,29 ,1.708177,4.833085,3.334053,0.677845
sgpcmbeC1.c1,2004,08 9:30:00,29 ,1.797883,4.631807,3.324329,0.644615
sgpcmbeC1.c1,2004,0810:30:00,29 ,1.847409,4.423242,3.314011,0.610439
sgpcmbeC1.c1,2004,0811:30:00,29 ,1.974342,4.324767,3.320224,0.583235
sgpcmbeC1.c1,2004,0812:30:00,29 ,2.015179,4.334472,3.295602,0.567165
sgpcmbeC1.c1,2004,0813:30:00,30 ,1.872983,5.855828,3.408206,0.742338
sgpcmbeC1.c1,2004,0814:30:00,29 ,1.831876, 5.44108,3.434405,0.760366
sgpcmbeC1.c1,2004,0815:30:00,29 ,1.870924,5.028727,3.416688,0.764862
sgpcmbeC1.c1,2004,0816:30:00,29 ,1.938694,4.757211,3.418924,0.792079
sgpcmbeC1.c1,2004,0817:30:00,29 ,1.924011, 4.77499,3.407839,0.827462
sgpcmbeC1.c1,2004,0818:30:00,28 ,2.032618,4.784001,3.466498,0.853092
sgpcmbeC1.c1,2004,0819:30:00,28 ,1.996516,4.823823,3.459543,0.871797
sgpcmbeC1.c1,2004,0820:30:00,27 ,1.992569,4.899529,3.354909,  0.8285
sgpcmbeC1.c1,2004,0821:30:00,28 ,2.001251,4.935135,3.398281, 0.85092
sgpcmbeC1.c1,2004,0822:30:00,28 , 1.83699,5.285123,3.437871,0.900827
sgpcmbeC1.c1,2004,0823:30:00,28 ,1.645622,5.430812, 3.46137,0.900633