The multi-particle fit includes pions, protons, and helions.  The table below shows the result if the pions are excluded from the fit.
 
 

	T  with pion/without	delta T	beta with pion/without	delta beta
2 AGeV	117/119	+2	0.41/0.41	0
4 AGeV	128/137	+9	0.46/0.45	-0.01
6 AGeV	125/133	+8	0.45/0.44	-0.01
8 AGeV	133/148	+15	0.44/0.43	-0.01