年份&函数

正态分布密度函数

伽玛分布密度函数

Logistic分布密度函数

2011

$u=112,\sigma =57.3$

$\alpha =3.81,\beta =29.369$

$u=90,\sigma =0.034$

2012

$u=128,\sigma =62$

$\alpha =4.23,\beta =30.115$

$u=108,\sigma =0.029$

2013

$u=109,\sigma =61$

$\alpha =3.24,\beta =33.762$

$u=88,\sigma =0.031$

2014

$u=120,\sigma =61.3$

$\alpha =3.83,\beta =31.336$

$u=100,\sigma =0.028$