Jackknife summary:
  1  93205.000000     43.289000
  2  98694.000000     34.377000
  3  81448.000000     29.738000
  4  71670.000000     28.766000
  5  74032.000000     31.893000
  6  78877.000000     29.887000
  7  62617.000000     35.716000
  8  63943.000000     42.834000
  9  52783.000000     38.304000
 10  61163.000000     37.443000
 11  57187.000000     35.653000
 12  56158.000000     30.563000
 13  40455.000000     38.194000
 14  37925.000000     41.710000
 15  36003.000000     39.558000
 16  36020.000000     36.143000
 17  30743.000000     37.246000
 18  35343.000000     36.115000
 19  19285.000000     35.958000
 20  30388.000000     31.859000
 21  16731.000000     36.007000
 22  16426.000000     35.092000

jmean:      0.000 std. err:     30.286 jmean (years):      0.000 std. err(years):    878.294