These graphs are created using collected realtime.txt data from a Cumulus Weather Station software program. Data is collected using a separate script (realtimelog.php) that looks for new data once a minute and stores that data into a log file called realtime.log.
More Details about these graphs can be found HERE
Below are examples of the scripts using collected realtime.txt data. They show each of the 8 current scripts in various modes showing number of hours (24hrs, 48hrs, 72hrs and 96hrs), and the frequency of the sample (Once an Hour, Twice an Hour, 4 Times an Hour).
These graphs are generated using the Aditus Free JpGraph (non-commerical) graphics library. More information about this library can be found at Aditus JpGraph PHP Library.
There are currently 8 scripts in this set:
The link below points to the TNETWeather Cumulus Project Pages which have a number of other projects centered around the Cumulus Weather Station which is a product of SandaySoft.