datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 6:30:00,30 ,2.195038,35.61353,18.35971,9.343885
sgpcmbeC1.c1,2002,09 7:30:00,30 ,19.02176,149.2251,  76.884,29.75919
sgpcmbeC1.c1,2002,09 8:30:00,30 ,53.19059,236.5002,122.2108,53.43682
sgpcmbeC1.c1,2002,09 9:30:00,30 ,66.65165,314.4962,169.7422,80.09209
sgpcmbeC1.c1,2002,0910:30:00,30 ,69.67582,382.7965,185.3031,88.03023
sgpcmbeC1.c1,2002,0911:30:00,30 ,70.49953,421.0385,209.6454,106.2652
sgpcmbeC1.c1,2002,0912:30:00,30 ,68.02583,471.1502,211.5925,105.7787
sgpcmbeC1.c1,2002,0913:30:00,30 ,66.84937,519.2792,192.1219,108.5642
sgpcmbeC1.c1,2002,0914:30:00,30 ,63.13753,349.9919,171.7411,80.99559
sgpcmbeC1.c1,2002,0915:30:00,30 ,58.56337,306.2202,147.2958, 71.1835
sgpcmbeC1.c1,2002,0916:30:00,30 , 10.7542,232.3575,111.6456,49.71805
sgpcmbeC1.c1,2002,0917:30:00,30 , 2.47695, 137.702,63.67849,28.45536
sgpcmbeC1.c1,2002,0918:30:00,30 ,       0,28.15783, 11.4342,9.166384
sgpcmbeC1.c1,2002,0919:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0920:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0921:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0922:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0923:30:00,27 ,       0,       0,       0,       0