A couple of observations ..
but NEVER for Jet operations
.. but may be used for landing distance adjustments where we are looking at a flight idle situation for which thrust is not a pivotal concern.
.. temperature need not be considered for landing calculations ...
the manufacturer could be forgiven for assuming the worst case environmental envelope temperature
the usual certification requirement is standard conditions (ie ISA) for landing and this is the usual AFM presentation. Typical operator adjustment is to use DH in lieu of PH.