| Date | Bid | Offer |
|---|---|---|
| Apr 30 2014 | R$ 3.1001 | R$ 3.1011 |
| Apr 29 2014 | R$ 3.0644 | R$ 3.0655 |
| Apr 28 2014 | R$ 3.0958 | R$ 3.0969 |
| Apr 25 2014 | R$ 3.0885 | R$ 3.0896 |
| Apr 24 2014 | R$ 3.0726 | R$ 3.0743 |
| Apr 23 2014 | R$ 3.0978 | R$ 3.0988 |
| Apr 22 2014 | R$ 3.0978 | R$ 3.0989 |
| Apr 17 2014 | R$ 3.1087 | R$ 3.1099 |
| Apr 16 2014 | R$ 3.0868 | R$ 3.0881 |
| Apr 15 2014 | R$ 3.0720 | R$ 3.0730 |
| Apr 14 2014 | R$ 3.0537 | R$ 3.0548 |
| Apr 11 2014 | R$ 3.0645 | R$ 3.0658 |
| Apr 10 2014 | R$ 3.0535 | R$ 3.0547 |
| Apr 09 2014 | R$ 3.0538 | R$ 3.0549 |
| Apr 08 2014 | R$ 3.0320 | R$ 3.0331 |
| Apr 07 2014 | R$ 3.0677 | R$ 3.0689 |
| Apr 04 2014 | R$ 3.0714 | R$ 3.0724 |
| Apr 03 2014 | R$ 3.1259 | R$ 3.1272 |
| Apr 02 2014 | R$ 3.1242 | R$ 3.1253 |
| Apr 01 2014 | R$ 3.1214 | R$ 3.1225 |
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.