datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,08 0:30:00,28 ,2.411485, 5.66709,4.494966,0.804009
sgpcmbeC1.c1,2006,08 1:30:00,27 ,2.399554,5.554026,4.501935,0.798291
sgpcmbeC1.c1,2006,08 2:30:00,28 , 2.29474,5.693083,4.522094,0.807373
sgpcmbeC1.c1,2006,08 3:30:00,28 ,2.242481,5.694946,  4.5583,0.822947
sgpcmbeC1.c1,2006,08 4:30:00,28 ,2.123066,5.890055,4.577057,0.841214
sgpcmbeC1.c1,2006,08 5:30:00,28 ,1.954711, 5.52005, 4.55969,0.849045
sgpcmbeC1.c1,2006,08 6:30:00,28 ,2.023052,5.625752,  4.5564, 0.84188
sgpcmbeC1.c1,2006,08 7:30:00,27 ,2.133942,5.903514,4.484064,0.810641
sgpcmbeC1.c1,2006,08 8:30:00,29 ,2.306604,5.982606,4.460088,0.762647
sgpcmbeC1.c1,2006,08 9:30:00,29 ,2.403451,5.634829,4.442502,0.716903
sgpcmbeC1.c1,2006,0810:30:00,29 ,2.398962, 5.46399,4.420972,0.724013
sgpcmbeC1.c1,2006,0811:30:00,29 ,2.372755,5.425285,4.408136,0.728045
sgpcmbeC1.c1,2006,0812:30:00,29 ,2.440453,5.269613,4.417197,0.722634
sgpcmbeC1.c1,2006,0813:30:00,29 ,2.512901,5.315465,4.407885,0.727876
sgpcmbeC1.c1,2006,0814:30:00,29 ,2.535121,5.463206,4.404508, 0.70182
sgpcmbeC1.c1,2006,0815:30:00,28 ,2.637219, 5.43019, 4.39827, 0.70522
sgpcmbeC1.c1,2006,0816:30:00,28 ,2.632064,5.536081,4.373518,0.698851
sgpcmbeC1.c1,2006,0817:30:00,28 ,2.471796,5.745983,4.391088,  0.7451
sgpcmbeC1.c1,2006,0818:30:00,28 ,2.493437,5.207143,4.338305,0.763971
sgpcmbeC1.c1,2006,0819:30:00,28 ,2.374906,5.281233, 4.34463,0.785147
sgpcmbeC1.c1,2006,0820:30:00,28 ,2.294467,5.357435, 4.34195,0.789153
sgpcmbeC1.c1,2006,0821:30:00,28 ,2.397037,5.365514,4.420132, 0.81993
sgpcmbeC1.c1,2006,0822:30:00,27 ,2.395945,5.440988,4.425219,0.841409
sgpcmbeC1.c1,2006,0823:30:00,27 ,2.400536,5.457768,4.416707,  0.8126