datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,06 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 5:30:00,30 ,       0,35.71934,15.69757,9.628647
sgpcmbeC1.c1,2007,06 6:30:00,30 ,1.988648,69.28131,37.08651,20.29572
sgpcmbeC1.c1,2007,06 7:30:00,30 ,3.345074,143.3445,55.33428,33.41795
sgpcmbeC1.c1,2007,06 8:30:00,30 ,12.60493,197.0143,81.84478,48.94856
sgpcmbeC1.c1,2007,06 9:30:00,30 ,15.96804,238.2949, 98.1487, 60.6741
sgpcmbeC1.c1,2007,0610:30:00,29 , 16.1654, 294.361,119.8566,87.91613
sgpcmbeC1.c1,2007,0611:30:00,29 ,10.47038,290.2274,133.2244,95.17184
sgpcmbeC1.c1,2007,0612:30:00,29 ,2.593068,379.9435,142.0956,124.3866
sgpcmbeC1.c1,2007,0613:30:00,28 , 11.4893,371.9951,157.3893,114.4375
sgpcmbeC1.c1,2007,0614:30:00,29 ,11.10649,303.4476,143.2402,97.45058
sgpcmbeC1.c1,2007,0615:30:00,29 ,15.46006, 281.835,152.3262,81.56906
sgpcmbeC1.c1,2007,0616:30:00,30 ,18.69657,263.5601,106.7523,60.01672
sgpcmbeC1.c1,2007,0617:30:00,30 ,2.766401,138.7414,63.22993,37.25325
sgpcmbeC1.c1,2007,0618:30:00,30 ,       0,89.12713,38.79069,22.36108
sgpcmbeC1.c1,2007,0619:30:00,30 ,       0,31.53533, 17.3209,9.938811
sgpcmbeC1.c1,2007,0620:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0621:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0622:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0623:30:00,29 ,       0,       0,       0,       0