| IOM3.1 | This Document | Status |
| Section 3.1 | Section 3.1 | complementary info |
| Section 3.3 | Section 3.2 | complementary info |
| Section 3.6 | Section 3.3 | complementary info |
| Section 4 | Section 4 | replacement |
| Section 5 | Section 5 | complementary info |
| Section 6.1 | Section 6.1 | new P05 and P25 description |
| Section 6.2 | Section 6.2 | additional info |
| Section 6.3 | Section 6.3 | replacement |
| Section 6.4 | Section 6.4 | new P05 and P25 description |
| Section 6.6 | Section 6.5 | new time calculation for PHT32 |
| Section 6.9 | Section 6.6 | additional info on polarimetry |