$par
[1] 1952.2228093 1983.6486802 2013.6310251 2030.8075290    0.9304419

$objective
[1] 0.3783791

$convergence
[1] 0

$iterations
[1] 36

$evaluations
function gradient 
      39      228 

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

