datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,05 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 5:30:00,30 ,       0,15.61578,3.123728,4.157516
sgpcmbeC1.c1,2002,05 6:30:00,31 , 0.00275,49.74761,20.69386,19.34489
sgpcmbeC1.c1,2002,05 7:30:00,31 ,       0,131.0391,48.54432,33.40324
sgpcmbeC1.c1,2002,05 8:30:00,31 ,0.020588,207.7456,51.38337,47.64854
sgpcmbeC1.c1,2002,05 9:30:00,31 ,0.243006,261.1965, 90.6593, 75.1545
sgpcmbeC1.c1,2002,0510:30:00,31 ,0.618727,276.3144,78.27872,82.50701
sgpcmbeC1.c1,2002,0511:30:00,31 ,0.445298, 287.098,70.94545,83.28392
sgpcmbeC1.c1,2002,0512:30:00,31 ,0.502781,271.4771,70.11823,90.32008
sgpcmbeC1.c1,2002,0513:30:00,31 , 0.32588,291.7083,71.86165,88.94966
sgpcmbeC1.c1,2002,0514:30:00,31 ,0.156214,271.5813,81.39519,79.76364
sgpcmbeC1.c1,2002,0515:30:00,31 ,0.002244,220.1385,69.67775,57.84669
sgpcmbeC1.c1,2002,0516:30:00,31 ,0.076441,121.8528,51.27994,33.75965
sgpcmbeC1.c1,2002,0517:30:00,31 ,       0,85.54866,43.04329,24.98706
sgpcmbeC1.c1,2002,0518:30:00,31 ,       0,48.25055,24.70924,17.55152
sgpcmbeC1.c1,2002,0519:30:00,31 ,       0,12.30813,2.263894,3.360044
sgpcmbeC1.c1,2002,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0522:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0523:30:00,30 ,       0,       0,       0,       0