$par
[1] 1959.5828921 1973.9029468 2018.6587300 2020.3250069    0.6823219

$objective
[1] 1.401765

$convergence
[1] 0

$iterations
[1] 39

$evaluations
function gradient 
      48      238 

$message
[1] "both X-convergence and relative convergence (5)"

