| Bit Number | Value | Meaning |
| 1 | 0 1 | Points scan in +i direction, i.e. from pole to equator Points scan in -i direction, i.e. from equator to pole |
| 2 | 0 1 | Points scan in +j direction, i.e. from west to east Points scan in -j direction, i.e. from east to west |
| 3 | 0 1 | Adjacent points in i direction are consecutive Adjacent points in j direction are consecutive |
| 4-8 | Reserved |