I’ve restored your PHPTimeSeries feeds, June/July correlates with the date the feeds where first transferred to the new server as a backup, they where then updated daily and it looks like it must be an issue resulting from the nightly backup. I have all the original feeds on the old server so copied your original phptimeseries feeds across.
I will now try and establish if this was an isolated issue or if I need to extend this to other user feeds.