      parameter (np=12)
      integer  lista(np)
      dimension covar(np,np),alpha(np,np),a(np),am(np),ac(np),ap(np),
     &     gues(np),guesini(np,3)
c 0.285 -- 0.355  update feb 2021   ! fit for chptail
      DATA guesini/
      include 'param_fpi2fitchptail.h1'
      emin=0.2850
      emax=0.3550
      npi=3
