Heating system is useless

[ResponsiblyReckless]

I’m back to square one…

Outside air temperature 21ºF

Fan speed 4, temperature full hot, vents selected to dash (face):
Driver Outer Vent: 82.5ºF
Driver Inner Vent: 89.2ºF
Passenger Inner Vent: 87.9ºF
Passenger Outer Vent: 67.1ºF
Rear LH Vent:114.8ºF
Rear RH Vent:127.0ºF

Fan speed 4, temperature full hot, vents selected to dash (face) and Floor (feet):
Driver Outer Vent:116.6ºF
Driver Inner Vent:127.5ºF
Passenger Inner Vent:123.6ºF
Passenger Outer Vent:114.4ºF
Rear LH Vent:143.2ºF
Rear RH Vent:148.1ºF