Those numbers look quite good. You did lose 1ppm of FC overnight and at relatively low FC starting point, but still not too bad. I don't see your CC reading (combined chlorine), which tells us if there is any trash chlorine being processed, but all-n-all, the numbers look pretty good. How does your water look this morning?
Keep in mind most of those before/after numbers above typically don't change like that overnight, but it's also not uncommon for us when testing at home to have a slight +/- 10 ppm variance on some tests.
If your water is clear, you may not need to start a SLAM at this point. Keep your FC at your target level and watch everything. If your water starts to get cloudy, you see any algae, or you suspect you are using more than an average amount of FC from your SWG, then you may need to consider a SLAM.