
To convert readings for serum progesterone from ng to nmol x by 3.18 and use table previously logged.
5.4 ng is equal to 17.172 nmol so ovulation impending or just occurred - estimated breeding window 2 -4 days
After ovulation eggs take a further 2 days to mature and be ready for fertilisation hence wait of 2 days post ovulation for natural service ... Would be longer for AI with frozen semen
Good luck