datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,09 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 6:30:00,30 ,       0,62.82937,18.62529,11.03425
sgpcmbeC1.c1,2007,09 7:30:00,30 ,13.35504,134.5732,80.10115,27.81093
sgpcmbeC1.c1,2007,09 8:30:00,30 ,55.63041,345.4083,149.9097,72.43603
sgpcmbeC1.c1,2007,09 9:30:00,29 ,61.70609,368.4023,189.2424,83.35091
sgpcmbeC1.c1,2007,0910:30:00,30 ,64.17742,463.5222,209.8943,96.02584
sgpcmbeC1.c1,2007,0911:30:00,30 ,66.03831,517.0181,227.0091,105.1978
sgpcmbeC1.c1,2007,0912:30:00,30 ,67.31432,507.1887,251.2942,122.7481
sgpcmbeC1.c1,2007,0913:30:00,30 , 66.2466,508.1159,250.0359,125.0816
sgpcmbeC1.c1,2007,0914:30:00,30 ,64.29377,520.5135,217.1206,107.7041
sgpcmbeC1.c1,2007,0915:30:00,30 ,60.80301,371.0345,176.8192,79.66919
sgpcmbeC1.c1,2007,0916:30:00,30 ,54.23063,260.8902,132.9345,54.23841
sgpcmbeC1.c1,2007,0917:30:00,30 ,  40.179,120.8182,68.68488,18.93218
sgpcmbeC1.c1,2007,0918:30:00,29 ,2.530989,39.29296,12.38661,9.274035
sgpcmbeC1.c1,2007,0919:30:00,29 ,       0,0.196596,0.011081,0.039587
sgpcmbeC1.c1,2007,0920:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0921:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0922:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0923:30:00,29 ,       0,       0,       0,       0