$par
[1] 1963.999042 2018.427289 2018.657139 2018.997220    1.237531

$objective
[1] 20.04991

$convergence
[1] 1

$iterations
[1] 110

$evaluations
function gradient 
     200      590 

$message
[1] "function evaluation limit reached without convergence (9)"

