| Date | Bid | Offer |
|---|---|---|
| Apr 29 2016 | R$ 3.5932 | R$ 3.5953 |
| Apr 28 2016 | R$ 3.6113 | R$ 3.6123 |
| Apr 27 2016 | R$ 3.6339 | R$ 3.6349 |
| Apr 26 2016 | R$ 3.6333 | R$ 3.6344 |
| Apr 25 2016 | R$ 3.6394 | R$ 3.6415 |
| Apr 22 2016 | R$ 3.6636 | R$ 3.6657 |
| Apr 20 2016 | R$ 3.6682 | R$ 3.6722 |
| Apr 19 2016 | R$ 3.6997 | R$ 3.7042 |
| Apr 18 2016 | R$ 3.7246 | R$ 3.7264 |
| Apr 15 2016 | R$ 3.6470 | R$ 3.6480 |
| Apr 14 2016 | R$ 3.6319 | R$ 3.6340 |
| Apr 13 2016 | R$ 3.6693 | R$ 3.6718 |
| Apr 12 2016 | R$ 3.7060 | R$ 3.7102 |
| Apr 11 2016 | R$ 3.6967 | R$ 3.7009 |
| Apr 08 2016 | R$ 3.8125 | R$ 3.8163 |
| Apr 07 2016 | R$ 3.8650 | R$ 3.8665 |
| Apr 06 2016 | R$ 3.8507 | R$ 3.8525 |
| Apr 05 2016 | R$ 3.8206 | R$ 3.8249 |
| Apr 04 2016 | R$ 3.7367 | R$ 3.7381 |
| Apr 01 2016 | R$ 3.7327 | R$ 3.7345 |
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.