.3e-03
 Iter 11: f = 9.544558e-01 f-delta = 2.2e-03
 Iter 12: f = 9.565373e-01 f-delta = 2.1e-03
 Iter 13: f = 9.584909e-01 f-delta = 2.0e-03
 Iter 14: f = 9.603111e-01 f-delta = 1.8e-03
 Iter 15: f = 9.619935e-01 f-delta = 1.7e-03
 Iter 16: f = 9.635362e-01 f-delta = 1.5e-03
 Iter 17: f = 9.649398e-01 f-delta = 1.4e-03
 Iter 18: f = 9.662071e-01 f-delta = 1.3e-03
 Iter 19: f = 9.673433e-01 f-delta = 1.1e-03
 Iter 20: f = 9.683552e-01 f-delta = 1.0e-03
 Iter 21: f = 9.692506e-01 f-delta = 9.0e-04
 Iter 22: 