Hi,
I too have noticed discrepancies with the data, but not from the script, on the site itself, some of the readings don't make sense, and checking with airport data confirms this. As for the script, I do not have the "cwopstats-inc.php" script, only what was originally available, which in my case is called "cwopstats.php"
I have attached said script for you to check - I have no issues with this script, it conveys exactly what's on the CWOP website, same graphics etc.
Hope this helps anyone with issues.
Thanks, Nick. dw7240.com