Corrections for March 23, 2021
| Symbol | Assessment Date | Original Assessment | New Assessment | Description |
| AAEUQ01c | 01-Jan-21 | 59.87 | 59.93 | OPEC Basket Price Yearly |
| AAEUQ03c | 01-Mar-21 | 65.62 | 65.47 | OPEC Basket Price Monthly |
| NMNG000w | 23-Mar-21 | 256768 | 264243 | NYMEX Natural Gas Contract Total |