datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,06 0:30:00,26 ,1.793108,5.748524,3.925427,  0.9825
sgpcmbeC1.c1,2007,06 1:30:00,22 ,1.779477,5.296714,3.788755,0.941359
sgpcmbeC1.c1,2007,06 2:30:00,25 , 1.71435,5.830463,3.863894,1.017848
sgpcmbeC1.c1,2007,06 3:30:00,25 ,1.658359,5.907514,3.834896,1.021586
sgpcmbeC1.c1,2007,06 4:30:00,27 , 1.59509,5.762331,3.893291,1.064072
sgpcmbeC1.c1,2007,06 5:30:00,26 ,1.568295,5.839669,3.801352,1.044839
sgpcmbeC1.c1,2007,06 6:30:00,25 ,1.588069,5.359507, 3.75425,1.003215
sgpcmbeC1.c1,2007,06 7:30:00,27 ,1.528718,5.335548,3.725542,0.981273
sgpcmbeC1.c1,2007,06 8:30:00,27 ,1.467677,5.345293,3.671135,1.017268
sgpcmbeC1.c1,2007,06 9:30:00,27 ,1.477759,5.394706,3.694298,1.049327
sgpcmbeC1.c1,2007,0610:30:00,26 ,1.472867,5.566948,3.642279,1.003429
sgpcmbeC1.c1,2007,0611:30:00,26 ,1.478526, 5.55107,3.688511,0.990385
sgpcmbeC1.c1,2007,0612:30:00,25 ,1.487324,5.744708,3.672862,0.971542
sgpcmbeC1.c1,2007,0613:30:00,25 , 1.46559,5.822992,3.740127,0.985973
sgpcmbeC1.c1,2007,0614:30:00,25 ,1.471215,5.587927,3.713267,0.970807
sgpcmbeC1.c1,2007,0615:30:00,25 , 1.38007,5.494061,3.702716,0.943735
sgpcmbeC1.c1,2007,0616:30:00,27 ,1.366539,5.880395,3.885497,1.043618
sgpcmbeC1.c1,2007,0617:30:00,26 ,1.349112,5.552418,3.831315,1.011192
sgpcmbeC1.c1,2007,0618:30:00,26 ,1.383879,5.367449, 3.86304,1.015608
sgpcmbeC1.c1,2007,0619:30:00,27 ,1.438629,5.499022,3.881525,0.998334
sgpcmbeC1.c1,2007,0620:30:00,28 ,1.562197,5.665782, 3.92118,1.027634
sgpcmbeC1.c1,2007,0621:30:00,26 ,1.622458, 5.55323,3.901554, 1.04829
sgpcmbeC1.c1,2007,0622:30:00,25 ,1.668404,5.271364,3.846251,0.998963
sgpcmbeC1.c1,2007,0623:30:00,25 ,1.789936,5.344525,3.890174,0.967639