b=1.600 B=2 m=20 MARKED: status optimal  beta=0.983772  (beta1=0.975761, g22(0)/2=1.9785, g12hat(0)=1.9705)  value 1-M/beta with M from window
   check: min g11 -1.06e-08  min g12 -2.55e-06  min g22 -3.80e-07 (x in (0,30))
   check: min eigenvalue of Hhat on fine xi grid -1.07e-05 (at xi=0.7738)
