Global Positioning System Message format Subframe1

| Subframe_ | Page_ | Name_ | Word_ | Bits | Scale_ | Signed |
|---|---|---|---|---|---|---|
| 1 | all | AF2 | 9 | 1–8 | 2^-55 | Yes |
| 1 | all | AF1 | 9 | 9–24 | 2^-43 | Yes |
| 1 | all | AF0 | 10 | 1–22 | 2^-31 | Yes |