| Date | Bid | Offer |
|---|---|---|
| Jun 30 2015 | R$ 4.8768 | R$ 4.8795 |
| Jun 29 2015 | R$ 4.9460 | R$ 4.9486 |
| Jun 26 2015 | R$ 4.9205 | R$ 4.9221 |
| Jun 25 2015 | R$ 4.8762 | R$ 4.8777 |
| Jun 24 2015 | R$ 4.8363 | R$ 4.8385 |
| Jun 23 2015 | R$ 4.8879 | R$ 4.8891 |
| Jun 22 2015 | R$ 4.8651 | R$ 4.8673 |
| Jun 19 2015 | R$ 4.8870 | R$ 4.8894 |
| Jun 18 2015 | R$ 4.8374 | R$ 4.8399 |
| Jun 17 2015 | R$ 4.8650 | R$ 4.8674 |
| Jun 16 2015 | R$ 4.8581 | R$ 4.8606 |
| Jun 15 2015 | R$ 4.8314 | R$ 4.8335 |
| Jun 12 2015 | R$ 4.8468 | R$ 4.8493 |
| Jun 11 2015 | R$ 4.8800 | R$ 4.8825 |
| Jun 10 2015 | R$ 4.7862 | R$ 4.7884 |
| Jun 09 2015 | R$ 4.7661 | R$ 4.7677 |
| Jun 08 2015 | R$ 4.7640 | R$ 4.7661 |
| Jun 05 2015 | R$ 4.8352 | R$ 4.8375 |
| Jun 03 2015 | R$ 4.7846 | R$ 4.7867 |
| Jun 02 2015 | R$ 4.8193 | R$ 4.8212 |
| Jun 01 2015 | R$ 4.8262 | R$ 4.8287 |
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.