datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,08 0:30:00,22 ,3.092183,5.877625,4.223716,0.724564
sgpcmbeC1.c1,2003,08 1:30:00,22 ,3.036612, 5.78081,4.232447,0.745745
sgpcmbeC1.c1,2003,08 2:30:00,21 ,3.032485, 5.74864,4.184412, 0.71946
sgpcmbeC1.c1,2003,08 3:30:00,22 ,2.751634,5.612619,4.239289,0.733775
sgpcmbeC1.c1,2003,08 4:30:00,22 ,2.743665,5.631958,4.262587,0.785936
sgpcmbeC1.c1,2003,08 5:30:00,22 ,2.853534,5.727276,4.254597,0.768264
sgpcmbeC1.c1,2003,08 6:30:00,22 ,2.661827,5.649877,  4.2407,0.746783
sgpcmbeC1.c1,2003,08 7:30:00,22 ,2.664642, 5.66132,4.146302, 0.71637
sgpcmbeC1.c1,2003,08 8:30:00,23 ,2.789623,5.722963, 4.09061,0.670367
sgpcmbeC1.c1,2003,08 9:30:00,23 ,2.666951,5.880167,4.099989, 0.67042
sgpcmbeC1.c1,2003,0810:30:00,23 , 2.67991,5.623197,4.046428, 0.64535
sgpcmbeC1.c1,2003,0811:30:00,23 ,2.783406,5.534204, 4.05568,0.613885
sgpcmbeC1.c1,2003,0812:30:00,23 ,2.799078, 5.48473,4.029785, 0.61638
sgpcmbeC1.c1,2003,0813:30:00,22 ,2.875171,5.556199, 4.07485,0.622641
sgpcmbeC1.c1,2003,0814:30:00,22 ,2.897702,5.436554,4.104545,0.619123
sgpcmbeC1.c1,2003,0815:30:00,22 ,3.137589,5.513189,4.141162,0.604597
sgpcmbeC1.c1,2003,0816:30:00,22 , 3.16707,5.643418, 4.08942,0.593624
sgpcmbeC1.c1,2003,0817:30:00,22 ,3.079275,5.678629,4.090281,0.563545
sgpcmbeC1.c1,2003,0818:30:00,23 ,3.160068,5.791449, 4.12184,0.682734
sgpcmbeC1.c1,2003,0819:30:00,22 ,3.209944,5.655421,4.139119,0.647741
sgpcmbeC1.c1,2003,0820:30:00,22 ,3.042775,5.627448,4.171592,0.627542
sgpcmbeC1.c1,2003,0821:30:00,22 ,  3.1222, 5.57907,4.223935,0.614609
sgpcmbeC1.c1,2003,0822:30:00,22 ,3.040006,5.678231,4.226535,0.632899
sgpcmbeC1.c1,2003,0823:30:00,22 ,3.091541,5.908721,4.273539,0.645353