RA - No correction has been made for the offset between the measured and true pointing
direction.
DEC - As above
LII - Galactic longitude computed from the RA above
BII - Galactic latitude computed from the DEC above
M_STD_COL - The standard M magnitude that was calculated when the
standard COL colour was calculated (M stands for one of the filters and COL
the instrumental colour that was used - NB THE FILTERS FOR ALL COLOURS ARE THE
XMM CODES LISTED EARLIER).
ERR_M_STD_COL - The error of the standard M magnitude.