When you turn on GPS and some app subscribes for GPS notifications, GPS status info shows up with "SAT", "SIG" and "TTF" info (the last one I know, Time To Fix) but what is the meaning of the first two and what is the meaning of the numbers/symbols (like infinity) shown up next to them?
Update: example of the Android GPS status:
SAT 0/2 | SIG 19/∞ | TTF 27s
The last one means "it took 27s (so far) to acquire GPS signal". I don't know about the first two ones and all those numbers.