| Sample Date | IG1 - IG5 (MRC) | IG6 - BALSA NOVA | IG7 - PORTO AMAZONAS | IG8 - S. MATEUS DO SUL | IG9 - UNIÃO DA V. |
| S1 (3/31/2014) | 13.20 | 7.80 | 12.20 | 10.80 | 12.40 |
| S2 (7/22/2014) | 17.80 | 8.20 | 8.00 | 16.20 | 24.40 |
| S3 (10/13/2014) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| S4 (3/02/2015) | 9.40 | 3.40 | 5.00 | 15.80 | 20.80 |
| S5 (6/01/2015) | 23.60 | 22.60 | 57.00 | 48.60 | 31.60 |
| S6 (11/30/2015) | 30.00 | 21.80 | 12.40 | 23.60 | 46.40 |
| S7 (3/14/2016) | 21.40 | 0.00 | 22.40 | 13.00 | 24.80 |
| S8 (6/06/2016) | 43.20 | 10.20 | 13.00 | 14.20 | 5.40 |
| S9 (11/21/2016) | 6.80 | 3.80 | 8.60 | 19.20 | 3.00 |
| S10 (4/03/2017) | 5.40 | 2.40 | 0.00 | 0.40 | 0.20 |