<prompt> Translate the following text to EnglishMzunguko wa juu unajumuisha malipo yoyote ya mshahara ambayo Huduma ya Posta inaweza kuwa nayo, mzunguko wa chini unaondoa Wachters 29.  <response>: The top curve incorporates any wage premium the Postal Service may have, the bottom curve nets out Wachters 29. 