| Date | Bid | Offer |
|---|---|---|
| Jul 29 2016 | R$ 4.2964 | R$ 4.2991 |
| Jul 28 2016 | R$ 4.3039 | R$ 4.3056 |
| Jul 27 2016 | R$ 4.2954 | R$ 4.2981 |
| Jul 26 2016 | R$ 4.3039 | R$ 4.3053 |
| Jul 25 2016 | R$ 4.3077 | R$ 4.3091 |
| Jul 22 2016 | R$ 4.2985 | R$ 4.3009 |
| Jul 21 2016 | R$ 4.3047 | R$ 4.3071 |
| Jul 20 2016 | R$ 4.2820 | R$ 4.2851 |
| Jul 19 2016 | R$ 4.3037 | R$ 4.3055 |
| Jul 18 2016 | R$ 4.3317 | R$ 4.3335 |
| Jul 15 2016 | R$ 4.3069 | R$ 4.3090 |
| Jul 14 2016 | R$ 4.3063 | R$ 4.3087 |
| Jul 13 2016 | R$ 4.3336 | R$ 4.3357 |
| Jul 12 2016 | R$ 4.3330 | R$ 4.3351 |
| Jul 11 2016 | R$ 4.2873 | R$ 4.2897 |
| Jul 08 2016 | R$ 4.2626 | R$ 4.2657 |
| Jul 07 2016 | R$ 4.3140 | R$ 4.3157 |
| Jul 06 2016 | R$ 4.2928 | R$ 4.2949 |
| Jul 05 2016 | R$ 4.2823 | R$ 4.2848 |
| Jul 04 2016 | R$ 4.3174 | R$ 4.3195 |
| Jul 01 2016 | R$ 4.2881 | R$ 4.2901 |
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.