```r
m.L2.FOMC <- mkinfit("FOMC", FOCUS_2006_L2_mkin, quiet = TRUE)
plot(m.L2.FOMC, show_residuals = TRUE,
     main = "FOCUS L2 - FOMC")
```

<img src="FOCUS_L_files/figure-html/unnamed-chunk-9-1.png" width="672" />

```r
summary(m.L2.FOMC, data = FALSE)
```

```
## mkin version:    0.9.44.9000 
## R version:       3.3.1 
## Date of fit:     Wed Oct 26 23:18:12 2016 
## Date of summary: Wed Oct 26 23:18:12 2016 
## 
## Equations:
## d_parent = - (alpha/beta) * 1/((time/beta) + 1) * parent
## 
## Model predictions using solution type analytical 
## 
## Fitted with method Port using 81 model solutions performed in 0.191 s
## 
## Weighting: none
## 
## Starting values for parameters to be optimised:
##          value   type
## parent_0 93.95  state
## alpha     1.00 deparm
## beta     10.00 deparm
## 
## Starting values for the transformed parameters actually optimised:
##               value lower upper
## parent_0  93.950000  -Inf   Inf
## log_alpha  0.000000  -Inf   Inf
## log_beta   2.302585  -Inf   Inf
## 
## Fixed parameter values:
## None
## 
## Optimised, transformed parameters with symmetric confidence intervals:
##           Estimate Std. Error   Lower   Upper
## parent_0   93.7700     1.8560 89.5700 97.9700
## log_alpha   0.3180     0.1867 -0.1044  0.7405
## log_beta    0.2102     0.2943 -0.4555  0.8759
## 
## Parameter correlation:
##           parent_0 log_alpha log_beta
## parent_0   1.00000  -0.09553  -0.1863
## log_alpha -0.09553   1.00000   0.9757
## log_beta  -0.18628   0.97567   1.0000
## 
## Residual standard error: 2.628 on 9 degrees of freedom
## 
## Backtransformed parameters:
## Confidence intervals for internally transformed parameters are asymmetric.
## t-test (unrealistically) based on the assumption of normal distribution
## for estimators of untransformed parameters.
##          Estimate t value    Pr(>t)   Lower  Upper
## parent_0   93.770  50.510 1.173e-12 89.5700 97.970
## alpha       1.374   5.355 2.296e-04  0.9009  2.097
## beta        1.234   3.398 3.949e-03  0.6341  2.401
## 
## Chi2 error levels in percent:
##          err.min n.optim df
## All data   6.205       3  3
## parent     6.205       3  3
## 
## Estimated disappearance times:
##          DT50  DT90 DT50back
## parent 0.8092 5.356    1.612
```