Ok, so after almost all-night logging I've put up to the google doc (at the bottom, below arduino code): EZ6 Meteo Temp&Humi Sensor - Google Docs
all the values that didn't duplicate one by another (signal is so strong, that your code puts up like 5-6 readings at the time).
Also - strange thing (or we don't know everything). A lot of readings shows 'battery=0', but weather station doesn't report battery as 'low' (the indicator doesnt show up). Maybe the 'low batt' bit is hidden somewhere else?