
Go to the link below to get a better version.
http://www.spritenote.co.uk/7day.html It seems to work better in IE than it does in firefox but such is life. ( I now know a bit about how IE mangles images

)
You can get the actual value of the graph by floating the cursor over the graph, Saves all those tedious scales. Blue section is less than O degrees red section greater than 100, light vertical bars are midday / dark bars are midnight.
Finally got some graphing going on, It's all done in html, (admittedly with the depreciated span tag) but it does allow multiple day, sensor sellection and screen width and a nice little trick with grads and tables to indicate scales altho' I say it myself.
For those that like their url's this is sensor 1 showing 7 days at a screen width of 1000 pixels.
Observations gratefully received.
More as I get it.