dates_expfit version: 200
step (Morgans) ::     0.001000
fitting 1 exponentials + affine
after initialization:     0.000000     0.965
gslsetup called
gslans:   20     0.000000
    0.965
error sd:     0.000581
halflife:    19.520
mean (generations):    35.509
    0.002880767    -0.000010304
##end of run