e-001 fitdelta = 1.6e-003
 Iter 33: fit = 5.072418e-001 fitdelta = 1.6e-003
 Iter 34: fit = 5.087490e-001 fitdelta = 1.5e-003
 Iter 35: fit = 5.100586e-001 fitdelta = 1.3e-003
 Iter 36: fit = 5.110745e-001 fitdelta = 1.0e-003
 Iter 37: fit = 5.117692e-001 fitdelta = 6.9e-004
 Iter 38: fit = 5.121888e-001 fitdelta = 4.2e-004
 Iter 39: fit = 5.124165e-001 fitdelta = 2.3e-004
 Iter 40: fit = 5.125308e-001 fitdelta = 1.1e-004
 Iter 41: fit = 5.125856e-001 fitdelta = 5.5e-005
 Final fit = 5.125856e-001 
P is a k