how we get paid?

anyone know how they base our miles for pay? I thought it was hub miles, based off my trip envelopes.. But, although close to those submitted numbers (like 10-15 miles usually), my paid miles very rarely matches exactly. Not to complain too loudly.. cuz those paid miles are usually more. Just curious.,

I got to thinking about it because I was thinking of running shortcuts, but then.. if I got paid by hub miles I'd be cutting my pay back. Saving the company fuel, but my checks would be smaller. Lame!

Then I thought well maybe they took the higher of the two numbers (ie., qc estimate vs your hub miles).. that'd work. I'd save time and fuel, but get paid ok. Kinda like a small bonus.

Or maybe they averaged the two? but nope.. it doesn't appear to be any of those.. for me at least. (nor is it the qualcomm est miles)

 

T#.LA/M..Hub/M..Paid/M
1..1522..1498...1513
2...814...790....811
3..1494..1470...1484
4..1208..1217...1233
5...494...419....419

LA=load assigned
/M= miles
. = just spaces for formatting
!= does not equal

These are 5 trips from a few weeks ago. As you can see:
a. Paid Miles != Hub/M, and..
b. Paid Miles != LA/M, and..
c. Paid Miles != LA/M + 2% * except when my Hub/M was MORE than the LA/M. (T#4), which makes sense here.. as Wingrider pointed out. and..

Best rules I can come up with are:
1. if you drive more miles than your LA/M, you will get paid your Hub.M OR your LA/M miles + 2%, whichever is less.
2. if you drive WAY under your LA/M, then you will get paid your Hub Miles.
3. if you drive a little bit under your LA/M you will get paid some variable number between your LA/M and your Hub.M.

I want to know how they come up with #3's variable number.. I can't predict it. Like T#2.. How'd they get 811??

Sorry maybe I'm just an anal accountant type, but I like to know how things work.