Assume we got a monthly average data from Jan to Dec of Year 2012. Then we got another monthly average data from Jan to Dec of Year 2013. If we average the monthly average of both year, for example
new average of Jan = (jan of Year 2012 + Jan of Year 2013)/2,
new average of Feb = (Feb of Year 2012 + Feb of Year 2013)/2,
new average of Dec = (Dec of Year 2012 + Dec of Year 2013)/2,
do we have a more consolidated term for this?