Is it possible that the "create missing" facility for the dayfile is inverting Heating and Cooling days ?
Because i've recreated this values until 25/07/11 (date of this column creation in dayfile ?) and with Beteljuice's dayfile reader script i noticed that in his yearly summary.
http://meteo.laurentmey.fr/betel/basic.php
To do that i deleted the lines before 25/07/11, use the create missing and copy the missing colums to my dayfile.
To confirm that just delete the last 7 days and create missing, Cooling and Heating are inverted
