| Date | Bid | Offer |
|---|---|---|
| Jun 28 2013 | R$ 0.3863 | R$ 0.3865 |
| Jun 27 2013 | R$ 0.3811 | R$ 0.3812 |
| Jun 26 2013 | R$ 0.3830 | R$ 0.3832 |
| Jun 25 2013 | R$ 0.3889 | R$ 0.3891 |
| Jun 24 2013 | R$ 0.3950 | R$ 0.3952 |
| Jun 21 2013 | R$ 0.3980 | R$ 0.3982 |
| Jun 20 2013 | R$ 0.3988 | R$ 0.3991 |
| Jun 19 2013 | R$ 0.3905 | R$ 0.3907 |
| Jun 18 2013 | R$ 0.3898 | R$ 0.3902 |
| Jun 17 2013 | R$ 0.3851 | R$ 0.3852 |
| Jun 14 2013 | R$ 0.3817 | R$ 0.3818 |
| Jun 13 2013 | R$ 0.3827 | R$ 0.3828 |
| Jun 12 2013 | R$ 0.3835 | R$ 0.3836 |
| Jun 11 2013 | R$ 0.3831 | R$ 0.3832 |
| Jun 10 2013 | R$ 0.3816 | R$ 0.3817 |
| Jun 07 2013 | R$ 0.3794 | R$ 0.3795 |
| Jun 06 2013 | R$ 0.3774 | R$ 0.3776 |
| Jun 05 2013 | R$ 0.3727 | R$ 0.3728 |
| Jun 04 2013 | R$ 0.3731 | R$ 0.3732 |
| Jun 03 2013 | R$ 0.3751 | R$ 0.3752 |
Source: Brazilian Central Bank
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Ptax is the main reference rate for the US Dollar in Brazil. It's published daily by the Brazilian Central Bank based on the quotes received from the major foreign exchange dealers in the Brazilian market. It's released by 1 PM (GMT-3) every business day.