That number beside your tier is not your average score, not your handicap, it is a made up number WGT uses to move you up tiers and has absolutely nothing to do with your actual average score. It is a little more accurate for legend and above till saturation occurs and not at all accurate for below legend.
If you are interested in knowing your actual average score, traditionally the only way i know how to do so, is you take your 10 lowest scores of your last 20 scores and average them after first doubling the nine hole scores.
Do this easily in excel as follows:
First make a your list:
Date Course Holes Score 18 Score Average Score
02.03.13 St Andrews Full 18 Ready Go 18 58 58 ?
02.03.13 Olympic Club Front 9 Ready Go 9 30 60
02.03.13 Congressional Back 9 Ready Go 9 32 64
02.03.13 Legend Kiawah Full 18 Ready Go 18 59 59
etc etc....to 20 rounds
Now for some formula's, where I put the question mark above, put in this formula and switch the f4:f23 with your list of 18 hole scores F4 being the top score and F23 being the bottom score =AVERAGE(SMALL(F4:F23,{1,2,3,4,5,6,7,8,9,10}))
You can even have excel automatically do your 18 hole score with this formula placed in the first box where you want your 18 hole score to be and copy and paste the cell all the way down to where you want the bottom result to be.
=IF(D4=18,E4,E4*2)
D4 being your actual 18 or 9 score cell, E4 being your actual score, then if it finds 18 under the hole list cell it repeats, if it finds 9 it doubles your score.
Based on this my average is 58.7 for the 10 best of my last 20 rounds presently when WGT reports it as 61.42. But I believe wgt uses my lowest 100 rounds as a Legend which then begins to saturate so all that is then required is time as the average begins to decrease no matter what score I shoot. Therefore also not an accurate reflection of any current ability.