There is obviously still some fluctuation there - but that is well within normal parameters for your length of line.
That sort of fluctuation may not even be due to the pumping station and may just be 'general household stuff'. IIRC your previous fluctuations were 10dB+ which was high.
2-3dB is perfectly acceptable.
If it keeps like that - then hopefully within a few weeks your Target SNR will drop and you will then be able to get higher sync speeds.
- In fact over time it may even drop down to the default (6dB).
If I were you I'd monitor it for a while longer, but looking from that graph now, Its does look like some work has been completed and its soooo much better than it was before.