The MDI Medium-l Program in Review

With the completion of the MDI Medium-l program in April 2011, we are now 
in a position to update its analysis in its entirety.  Our previous work 
focused mainly on ten 72 day periods during the declining phase of the 
solar cycle, in which we applied a series of corrections and updates to 
the original analysis to see what effect each had on the mode parameters 
and systematic errors.  We now extend this investigation to an analysis of 
the entire mission as a single timeseries spanning 5472 days, which will 
give us maximal signal to noise ratio and may yield expanded mode 
coverage.  In order to see the solar cycle dependence we also analyze all 
the data in one year intervals, which will also shed light on the time 
dependence of our errors.  Additionally we reanalyze all 74 of the 
original 72 day timeseries with and without asymmetric profiles to see if 
this has any effect on inversion results such as the torsional 
oscillation.  Finally we repeat our earlier exercise for 10 periods during 
the rising phase of the solar cycle as a check of our previous 
conclusions.