```r
summary(mm.L4[["SFO", 1]], data = FALSE)
```

```
## mkin version:    0.9.44.9000 
## R version:       3.3.1 
## Date of fit:     Wed Oct 26 23:18:15 2016 
## Date of summary: Wed Oct 26 23:18:16 2016 
## 
## Equations:
## d_parent = - k_parent_sink * parent
## 
## Model predictions using solution type analytical 
## 
## Fitted with method Port using 46 model solutions performed in 0.108 s
## 
## Weighting: none
## 
## Starting values for parameters to be optimised:
##               value   type
## parent_0       96.6  state
## k_parent_sink   0.1 deparm
## 
## Starting values for the transformed parameters actually optimised:
##                       value lower upper
## parent_0          96.600000  -Inf   Inf
## log_k_parent_sink -2.302585  -Inf   Inf
## 
## Fixed parameter values:
## None
## 
## Optimised, transformed parameters with symmetric confidence intervals:
##                   Estimate Std. Error  Lower   Upper
## parent_0             96.44    1.94900 91.670 101.200
## log_k_parent_sink    -5.03    0.07999 -5.225  -4.834
## 
## Parameter correlation:
##                   parent_0 log_k_parent_sink
## parent_0            1.0000            0.5865
## log_k_parent_sink   0.5865            1.0000
## 
## Residual standard error: 3.651 on 6 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      96.440000   49.49 2.283e-09 91.670000 1.012e+02
## k_parent_sink  0.006541   12.50 8.008e-06  0.005378 7.955e-03
## 
## Chi2 error levels in percent:
##          err.min n.optim df
## All data   3.287       2  6
## parent     3.287       2  6
## 
## Resulting formation fractions:
##             ff
## parent_sink  1
## 
## Estimated disappearance times:
##        DT50 DT90
## parent  106  352
```

```r
summary(mm.L4[["FOMC", 1]], data = FALSE)
```

```
## mkin version:    0.9.44.9000 
## R version:       3.3.1 
## Date of fit:     Wed Oct 26 23:18:16 2016 
## Date of summary: Wed Oct 26 23:18:16 2016 
## 
## Equations:
## d_parent = - (alpha/beta) * 1/((time/beta) + 1) * parent
## 
## Model predictions using solution type analytical 
## 
## Fitted with method Port using 66 model solutions performed in 0.151 s
## 
## Weighting: none
## 
## Starting values for parameters to be optimised:
##          value   type
## parent_0  96.6  state
## alpha      1.0 deparm
## beta      10.0 deparm
## 
## Starting values for the transformed parameters actually optimised:
##               value lower upper
## parent_0  96.600000  -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   99.1400     1.6800 94.820 103.5000
## log_alpha  -0.3506     0.3725 -1.308   0.6068
## log_beta    4.1740     0.5635  2.726   5.6230
## 
## Parameter correlation:
##           parent_0 log_alpha log_beta
## parent_0    1.0000   -0.5365  -0.6083
## log_alpha  -0.5365    1.0000   0.9913
## log_beta   -0.6083    0.9913   1.0000
## 
## Residual standard error: 2.315 on 5 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  99.1400  59.020 1.322e-08 94.8200 103.500
## alpha      0.7042   2.685 2.178e-02  0.2703   1.835
## beta      64.9800   1.775 6.807e-02 15.2600 276.600
## 
## Chi2 error levels in percent:
##          err.min n.optim df
## All data   2.029       3  5
## parent     2.029       3  5
## 
## Estimated disappearance times:
##         DT50 DT90 DT50back
## parent 108.9 1644    494.9
```