datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,08 0:30:00,31 ,       0,0.077649,0.002505,0.013946
sgpcmbeC1.c1,2005,08 1:30:00,31 ,       0,0.022487,0.000725,0.004039
sgpcmbeC1.c1,2005,08 2:30:00,31 ,       0, 0.05141,0.001658,0.009233
sgpcmbeC1.c1,2005,08 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,08 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,08 5:30:00,31 ,       0,2.788363,0.774959,0.915729
sgpcmbeC1.c1,2005,08 6:30:00,31 ,0.855336,21.06771,9.843058,4.890187
sgpcmbeC1.c1,2005,08 7:30:00,31 ,0.382594,22.45132,13.53526,5.039679
sgpcmbeC1.c1,2005,08 8:30:00,31 ,1.574858,31.00381,12.29245,6.788042
sgpcmbeC1.c1,2005,08 9:30:00,31 ,4.339009,32.94787,14.22465,10.15586
sgpcmbeC1.c1,2005,0810:30:00,31 , 2.19613,47.89768,16.22098,15.62282
sgpcmbeC1.c1,2005,0811:30:00,31 ,0.793367,71.20308,20.30283,20.98166
sgpcmbeC1.c1,2005,0812:30:00,31 ,0.414173,63.37815,18.24253, 18.1851
sgpcmbeC1.c1,2005,0813:30:00,31 ,1.749745,74.08547,25.11375,21.08868
sgpcmbeC1.c1,2005,0814:30:00,31 ,2.163585,62.34522,20.79501,16.95617
sgpcmbeC1.c1,2005,0815:30:00,31 ,0.601843,58.33582,19.44655,16.41653
sgpcmbeC1.c1,2005,0816:30:00,31 , 0.35057,  35.553,14.25559,10.54089
sgpcmbeC1.c1,2005,0817:30:00,31 ,0.051554,28.36113,10.45713,6.177239
sgpcmbeC1.c1,2005,0818:30:00,31 ,       0,16.36577,8.100487, 5.27356
sgpcmbeC1.c1,2005,0819:30:00,31 ,       0,4.704516,1.140043,1.560103
sgpcmbeC1.c1,2005,0820:30:00,31 ,       0,0.418256,0.017125,0.077143
sgpcmbeC1.c1,2005,0821:30:00,31 ,       0,0.001576,0.000051,0.000283
sgpcmbeC1.c1,2005,0822:30:00,31 ,       0,0.000788,0.000025,0.000141
sgpcmbeC1.c1,2005,0823:30:00,31 ,       0,0.325939,0.010514, 0.05854