Looking over the past 3 weeks of data for the Laser Room temperature, the attached plot shows 4 deviations
from the norm.  The first two coincide with maintenance activities carried out by Jason and myself.  The
third from the left by Cheryl and Robert doing some IO work.  The fourth one from the activity this week.
Each incursion results in a change in the pre-modecleaner body temperature with perhaps the largest change
occuring this week.

Since most times we probably touch up the pre-modecleaner alignment a little, this probably masked the
effect of the pre-modecleaner body length change on the alignment.