| Temperature deg C | Allowed Attenuation |
| <305 | 0 |
| 305 | 12.4 |
| 310 | 23.1 |
| 315 | 32.3 |
| 320 | 40.3 |
| 325 | 47.2 |
| 330 | 53.3 |
| 335 | 58.5 |
| 340 | 63.1 |
| 345 | 67.2 |
| 350 | 70.7 |
| 355 | 73.8 |
| 360 | 76.5 |
| 365 | 78.9 |
| 370 | 81.1 |
| 375 | 83 |
| 380 | 84.7 |
| 385 | 86.1 |
| 390 | 87.5 |
| 395 | 88.6 |
| 400 | 89.7 |
| 405 | 90.7 |
| 410 | 91.5 |
| 415 | 92.3 |
| 420 | 92.9 |
| 425 | 93.5 |
| 430 | 94.1 |
| 435 | 94.6 |
| >435 | 95 |