datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,08 0:30:00,31 ,       0,0.524714,0.016926,0.094241
sgpcmbeC1.c1,1997,08 1:30:00,31 ,       0, 0.79341,0.035107,0.150361
sgpcmbeC1.c1,1997,08 2:30:00,31 ,       0,1.155271,0.046195,0.211747
sgpcmbeC1.c1,1997,08 3:30:00,31 ,       0,0.700646,0.058095,0.181828
sgpcmbeC1.c1,1997,08 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,08 5:30:00,31 ,       0,6.909534,2.262117,1.859458
sgpcmbeC1.c1,1997,08 6:30:00,31 ,1.971185,32.73871,15.56412,7.221082
sgpcmbeC1.c1,1997,08 7:30:00,31 , 3.59967,60.04248,18.45351,14.25613
sgpcmbeC1.c1,1997,08 8:30:00,31 ,3.083644,75.77644,23.11121,21.15502
sgpcmbeC1.c1,1997,08 9:30:00,31 ,2.139074,110.6617,36.59675,33.30248
sgpcmbeC1.c1,1997,0810:30:00,31 ,  1.0622,175.0994, 49.5389,47.51867
sgpcmbeC1.c1,1997,0811:30:00,31 ,1.754078,135.5316,49.39264,42.73472
sgpcmbeC1.c1,1997,0812:30:00,31 ,1.610313,132.1917,41.68782,36.31396
sgpcmbeC1.c1,1997,0813:30:00,31 ,1.634395,171.1667,40.72694, 36.9986
sgpcmbeC1.c1,1997,0814:30:00,31 ,1.787428,112.3724,36.99094, 34.1692
sgpcmbeC1.c1,1997,0815:30:00,31 ,3.105238,103.0402,28.87946,23.50336
sgpcmbeC1.c1,1997,0816:30:00,31 ,1.970745,83.38015,28.00715,23.90214
sgpcmbeC1.c1,1997,0817:30:00,31 ,4.789006,67.44332,18.72069, 14.7032
sgpcmbeC1.c1,1997,0818:30:00,31 ,3.330564,  37.238,17.74957,7.162306
sgpcmbeC1.c1,1997,0819:30:00,31 ,       0,12.44848,5.331811,3.619483
sgpcmbeC1.c1,1997,0820:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0821:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0822:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0823:30:00,31 ,       0,0.431636,0.013924,0.077524