datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,05 0:30:00,28 , 1.04135, 4.33607,2.609553,0.968632
sgpcmbeC1.c1,2006,05 1:30:00,28 ,0.792629,4.803273,2.586046,  0.9788
sgpcmbeC1.c1,2006,05 2:30:00,28 ,0.924224,4.892047,2.606556,0.992686
sgpcmbeC1.c1,2006,05 3:30:00,27 ,0.923417,4.807742,2.571484,0.970935
sgpcmbeC1.c1,2006,05 4:30:00,27 ,0.955993,4.931998,2.563631, 0.93507
sgpcmbeC1.c1,2006,05 5:30:00,26 ,0.992328,3.918481,2.508901,0.848133
sgpcmbeC1.c1,2006,05 6:30:00,26 , 1.04209,4.075643,2.483732,0.827613
sgpcmbeC1.c1,2006,05 7:30:00,26 ,1.043631,3.860744,2.450405,0.762618
sgpcmbeC1.c1,2006,05 8:30:00,29 ,1.045465,3.717032,2.533249,0.743719
sgpcmbeC1.c1,2006,05 9:30:00,30 ,1.045493,3.736827,2.600622,0.746286
sgpcmbeC1.c1,2006,0510:30:00,30 , 1.01067,3.910393,2.647172,0.752245
sgpcmbeC1.c1,2006,0511:30:00,30 ,1.018901,3.909002,2.667825,0.766307
sgpcmbeC1.c1,2006,0512:30:00,30 ,0.998079,4.294065,2.703573,0.821643
sgpcmbeC1.c1,2006,0513:30:00,30 , 1.02467,4.097176,2.715589,0.834644
sgpcmbeC1.c1,2006,0514:30:00,30 ,1.107307,4.240409,2.778329,0.852231
sgpcmbeC1.c1,2006,0515:30:00,30 , 1.11102,4.289276,2.747747,0.871838
sgpcmbeC1.c1,2006,0516:30:00,30 ,0.926121,4.050208,2.709147,0.888766
sgpcmbeC1.c1,2006,0517:30:00,30 ,0.774852,4.094486,2.707315,0.900047
sgpcmbeC1.c1,2006,0518:30:00,30 , 0.88928,4.253683,2.727651,0.892188
sgpcmbeC1.c1,2006,0519:30:00,29 ,0.908621,4.322333,2.680875,0.861725
sgpcmbeC1.c1,2006,0520:30:00,28 ,0.914181, 3.79802,2.603829, 0.81447
sgpcmbeC1.c1,2006,0521:30:00,28 ,0.936761,3.888651,2.634196,0.844606
sgpcmbeC1.c1,2006,0522:30:00,28 ,0.946137,3.792572,2.658073,0.875359
sgpcmbeC1.c1,2006,0523:30:00,28 ,1.119954, 4.10248,2.666318,0.923728