All data items are defined in Network Code Section D. This Report details OCM Data Trends on a monthly basis up to the last 12 months.
[Your user agent does not support frames or is currently configured not to display frames. However, you may visit <a href="http://infoex.natgrid.co.uk/code/display_monthly_latest.asp?Report_type=Energy+Monthly&Report_id=val10">the related document.</a>]