Daniel,
Segue um exemplo dos dados para tornar o problema reproduzível.
| Data |
CDI |
Ibovespa |
ALFA DINAMICO FIA |
ALFA FIA |
| 01/02/97 |
100.244198 |
6956 |
77.5631 |
0.33373 |
| 01/03/97 |
100.32139 |
6998 |
78.05032 |
0.34725 |
| 01/06/97 |
100.398636 |
7160 |
79.3197 |
0.34982 |
| 01/07/97 |
100.475946 |
7297 |
82.01036 |
0.34084 |
| 01/08/97 |
100.553312 |
7427 |
82.28164 |
0.34426 |
| 01/09/97 |
100.630733 |
7454 |
82.79493 |
0.34285 |
| 01/10/97 |
100.70889 |
7478 |
82.04698 |
0.34263 |
| 01/13/97 |
100.78711 |
7412 |
82.32868 |
0.34275 |
| 01/14/97 |
100.865386 |
7621 |
84.52306 |
0.34776 |
| 01/15/97 |
100.943725 |
7668 |
86.36466 |
0.34922 |
| 01/16/97 |
101.022127 |
7656 |
86.74005 |
0.3513 |
| 01/17/97 |
101.100925 |
7816 |
86.74305 |
0.35152 |
| 01/20/97 |
101.179779 |
7835 |
86.84854 |
0.35297 |
| 01/21/97 |
101.258363 |
7905 |
87.77227 |
0.35453 |
| 01/22/97 |
101.337011 |
7818 |
87.63108 |
0.35711 |
| 01/23/97 |
101.416054 |
7891 |
87.96762 |
0.3565 |
| 01/24/97 |
101.495494 |
7760 |
87.7515 |
0.3547 |
| 01/27/97 |
101.574664 |
7759 |
87.71396 |
0.35453 |
| 01/28/97 |
101.655242 |
7850 |
87.6412 |
0.35487 |
| 01/29/97 |
101.734531 |
7737 |
86.20481 |
0.35258 |
| 01/30/97 |
101.816938 |
7789 |
86.37315 |
0.35225 |
| 01/31/97 |
101.910268 |
7965 |
88.24893 |
0.35641 |
| 02/03/97 |
102.003692 |
8096 |
89.45418 |
0.35969 |
| 02/04/97 |
102.097876 |
8102 |
89.39141 |
0.3595 |
| 02/05/97 |
102.191799 |
8171 |
90.26877 |
0.36263 |
| 02/06/97 |
102.286157 |
8148 |
90.26682 |
0.3611 |
| 02/07/97 |
102.380603 |
8317 |
92.41892 |
0.36529 |
| 02/12/97 |
102.475135 |
8671 |
96.43418 |
0.3736 |