datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,08 0:30:00,6 ,2.512965,4.540212,3.333767,0.697398
sgpcmbeC1.c1,2005,08 1:30:00,6 ,2.398184,4.759878, 3.36383,0.781203
sgpcmbeC1.c1,2005,08 2:30:00,6 ,2.469142,4.720427,3.360722,0.741846
sgpcmbeC1.c1,2005,08 3:30:00,5 ,2.529253,4.656677,3.448652,0.779643
sgpcmbeC1.c1,2005,08 4:30:00,5 ,2.549447,4.818592,3.583033,0.812181
sgpcmbeC1.c1,2005,08 5:30:00,6 ,2.617166,4.904889,3.581287,0.757126
sgpcmbeC1.c1,2005,08 6:30:00,6 ,2.726681,4.955437,3.709359,  0.7253
sgpcmbeC1.c1,2005,08 7:30:00,6 ,2.679245,4.957294,   3.595,0.751533
sgpcmbeC1.c1,2005,08 8:30:00,6 ,2.697903,4.963941,3.576663,0.762634
sgpcmbeC1.c1,2005,08 9:30:00,6 ,2.778357,5.051682,3.626668,0.755609
sgpcmbeC1.c1,2005,0810:30:00,5 ,2.726753,3.692637,3.396019,0.383874
sgpcmbeC1.c1,2005,0811:30:00,2 ,2.924811,3.580959,3.252885,0.463967
sgpcmbeC1.c1,2005,0812:30:00,2 ,3.062418,3.500987,3.281703,0.310115
sgpcmbeC1.c1,2005,0813:30:00,3 ,3.063499,3.908186,3.523942,0.427468
sgpcmbeC1.c1,2005,0814:30:00,4 ,2.979603,4.143733,3.690496,0.514115
sgpcmbeC1.c1,2005,0815:30:00,3 ,3.038761,4.065565,3.519025,  0.5166
sgpcmbeC1.c1,2005,0816:30:00,3 ,3.114486,3.925784,3.420158,0.441064
sgpcmbeC1.c1,2005,0817:30:00,3 ,2.982491,4.133153,3.464462,0.597624
sgpcmbeC1.c1,2005,0818:30:00,5 ,2.511296,4.097255,3.325311,0.605938
sgpcmbeC1.c1,2005,0819:30:00,5 ,2.493325,4.053977, 3.37372,0.602201
sgpcmbeC1.c1,2005,0820:30:00,5 ,2.609483,4.230923,3.479151,0.603838
sgpcmbeC1.c1,2005,0821:30:00,6 ,2.675207,4.588613,3.595325,0.616903
sgpcmbeC1.c1,2005,0822:30:00,6 ,2.654805, 4.56626,3.516825,0.617508
sgpcmbeC1.c1,2005,0823:30:00,6 ,2.592966,4.336169,3.400704, 0.57185