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Northern Indiana | There's some info on Wikipedia you might find useful. Not sure it's all exactly right, but it's a general overview of the StarFire network.
https://en.m.wikipedia.org/wiki/StarFire_(navigation_system)
As you'll read there, there is the expectation a sigma level of accuracy and a time period. Thus the variance for any signal level, but especially SF1. My belief is large changes in barometric pressure also causes shifts in accuracy. | |
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SF1 accuracy and lon/lat