datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,07 0:30:00,29 ,2.815759,4.971987,3.942153,0.658218
sgpcmbeC1.c1,2002,07 1:30:00,30 ,2.732825,5.560922,3.957333,0.697754
sgpcmbeC1.c1,2002,07 2:30:00,30 ,2.639926,5.069859,3.959748,   0.642
sgpcmbeC1.c1,2002,07 3:30:00,30 ,2.637705,4.904181,  3.9753,0.625691
sgpcmbeC1.c1,2002,07 4:30:00,31 ,2.625214,4.806609,3.966458,0.592938
sgpcmbeC1.c1,2002,07 5:30:00,31 ,2.709074,4.876921,3.950725,0.593095
sgpcmbeC1.c1,2002,07 6:30:00,30 , 2.71856,4.869381,3.891758,0.581399
sgpcmbeC1.c1,2002,07 7:30:00,31 ,2.604435,4.804626,3.904245,0.601991
sgpcmbeC1.c1,2002,07 8:30:00,31 ,2.534762,5.097254, 3.93898,0.662688
sgpcmbeC1.c1,2002,07 9:30:00,31 ,2.633502,5.230495,3.950137,0.664188
sgpcmbeC1.c1,2002,0710:30:00,31 ,2.663757,5.202655, 3.96606,0.677844
sgpcmbeC1.c1,2002,0711:30:00,30 ,2.709554,5.134497,3.925984,0.656846
sgpcmbeC1.c1,2002,0712:30:00,30 ,2.712235, 5.26288,3.962273,0.680925
sgpcmbeC1.c1,2002,0713:30:00,30 ,2.713547,5.473777,3.990929,0.692402
sgpcmbeC1.c1,2002,0714:30:00,30 ,2.748179,5.289721,3.984763,0.706608
sgpcmbeC1.c1,2002,0715:30:00,31 ,2.689626,5.325798,3.996811,0.730448
sgpcmbeC1.c1,2002,0716:30:00,31 ,2.627614,5.186082,4.002361,0.700273
sgpcmbeC1.c1,2002,0717:30:00,31 ,2.644455,5.323159,4.036137,0.719944
sgpcmbeC1.c1,2002,0718:30:00,30 ,2.828219,5.436127,4.006398,0.665411
sgpcmbeC1.c1,2002,0719:30:00,31 , 2.72904,5.243946,4.055678,0.713509
sgpcmbeC1.c1,2002,0720:30:00,31 ,2.723179,5.429734, 4.05092,0.732728
sgpcmbeC1.c1,2002,0721:30:00,31 ,2.732022,5.606678,4.036705,0.750338
sgpcmbeC1.c1,2002,0722:30:00,31 ,2.831223,5.801376,4.059757, 0.79551
sgpcmbeC1.c1,2002,0723:30:00,30 ,2.825084,5.759559,3.992515,0.745645