Exhaust gas Temps (EGT) are valueless unless qualified by other information or the 'other information' is already known.
To avoid me being seen as the site smart-ahse/know-all I'll let someone else fill in the parameters bit.
Gary/Mario/Abbey will have all the knowledge at their and (for once) they can't really 'fall out' over it.
Over to you guys!
EDIT
..at their...what? I hear you say...well...fingertips...yeah...thats it!
(sorry)