Hi Mike,
First task is to read that sensor file, I modified Wim's "Saratoga" script to read the sensor file.
Then wrote a script to run as a cron to load the data into an SQL database.
There are several graph/chart packages that can be used to display SQL data, I like JPGraphs, but you could use HighCharts.
I can help with reading the sensor file and the SQL load script, but explaining graph packages would take forever. There is a lot on the forum about using these packages.
If you would like to go down the route of getting the data into an SQL database, let me know?
Cheers,
Dave