lei: Life Expectancy Index
Variable
World3 03 indicators sector
Life Expectancy Index [Dmnl]
lei = tabhl ( leit , le / oy , 25, 85, 10)

lei in the updating graph: ( how to read )
In nodes
le : life expectancy
leit : Life Expectancy Index LOOKUP
oy : one year
Out nodes
hwi : Human Welfare Index
tabhl
