That was taken straight from the 744 maint manual. Seems the MM can't add up.
Bleed is taken from 7th stage IP, (which is 8th stage engine as the Fan is the 1st stage) and 6th stage HP (which is 14th and not 15th as stated in the MM, 1+7+6), blame mr. Boeing!
Might not to you Baywatcher but to some it may, nothing constructive to add then why bother.
