Described here No High/Lows, where is history and graphs data used for, and ? cron ?
You need to run a cron-job every 5 minutes.
If you prefer not to do that, you can check the first lines of the script and only use today high-lows in those blocks.
@ALL please post the link to the PWS_Dashboard site. with every post.
Otherwise only a general answer is possible.
Sorry for that.
Wim