Hello
Yes I know .. also called 3DFIX
it is good to know if the GPS is in the 3D state
In my case the receiver is in 3D state with 5 sats "connected"
By the 1PPS is still "crazy" 0,5 PPS, I will try to play with interrupt to see waht append, but not so easy.

I have done a small app, LED is flashing to give the 3D state (1,2 or 3 flashes) it is enough ..
thanks for your input
Francois