How accurate is GPS altitude?

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Tags

1. #signal
2. #general
3. #elevation
4. #error
5. #modern
6. #accurate
7. #times
8. #meters
9. #should
10. #range
11. #receiver
12. #available
13. #vertical
14. #reception
15. #correction
16. #decent
17. #horizontal
18. #thumb
19. #three