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Lower limit geopotential altitude

Values for calculation

$ H $ $ \mathrm{m} $

Calculation

Lower limit geopotential altitude

$\text{if }\ H\geq 80000$
$$H_b=80000$$
$\text{else if }\ H\geq 71000$
$$H_b=71000$$
$\text{else if }\ H\geq 51000$
$$H_b=51000$$
$\text{else if }\ H\geq 47000$
$$H_b=47000$$
$\text{else if }\ H\geq 32000$
$$H_b=32000$$
$\text{else if }\ H\geq 20000$
$$H_b=20000$$
$\text{else if }\ H\geq 11000$
$$H_b=11000$$
$\text{else}$
$$H_b=0$$