datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,06 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 5:30:00,29 ,       0, 10.3787,6.861996,2.754526
sgpcmbeC1.c1,2002,06 6:30:00,29 ,1.932328,52.28174,37.83231,15.96855
sgpcmbeC1.c1,2002,06 7:30:00,29 ,0.465147,97.52853,71.60578,31.12351
sgpcmbeC1.c1,2002,06 8:30:00,29 ,0.814069, 136.749,105.2716,36.63792
sgpcmbeC1.c1,2002,06 9:30:00,29 ,1.503138,165.4986,129.6277,42.38282
sgpcmbeC1.c1,2002,0610:30:00,29 ,12.84845,185.5869,144.1883,44.45529
sgpcmbeC1.c1,2002,0611:30:00,29 ,14.37589,193.8174,157.9919,43.39297
sgpcmbeC1.c1,2002,0612:30:00,29 ,29.85376,197.4966,155.3165,39.29251
sgpcmbeC1.c1,2002,0613:30:00,29 ,3.133645,190.8066,152.3578,42.96438
sgpcmbeC1.c1,2002,0614:30:00,29 ,0.243145,177.4988,145.8755,40.58944
sgpcmbeC1.c1,2002,0615:30:00,29 ,2.357675,167.4085,129.2722,35.38416
sgpcmbeC1.c1,2002,0616:30:00,29 ,1.102917, 136.532,102.0521,35.21809
sgpcmbeC1.c1,2002,0617:30:00,29 , 3.81227,96.26485,71.25325,28.13253
sgpcmbeC1.c1,2002,0618:30:00,29 ,       0,59.92842,36.83572,16.53106
sgpcmbeC1.c1,2002,0619:30:00,29 ,       0, 11.6965,6.975197,3.618345
sgpcmbeC1.c1,2002,0620:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0621:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0622:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0623:30:00,29 ,       0,       0,       0,       0