wxtempdetail.php missing March data

I got the above script working yesterday and uploaded the last three months data - they show fine in Almanac/Station Reports. If I go into my Hi/Lo/Av menu which uses the wxtempdetail.php script, it seems to have missed out plotting the data for March.

Any suggestions on how to get the data to show? march2012.htm shows the same detail as january & february?

Rich
www.northcommonweather.co.uk