Upper Deck (all 747)

60B - 1" extra space. N.B on the longest routes where a full relief crew is carried (i.e. HKG, SIN) this is a crew rest seat
60J - 1.5" extra space
62AK - effectivly unlimited space. However, since the shield was removed on conversion your feet can get rather cold if the seal in the door isn't perfect.
63J - 3" between the footrest and the back of the crew seats
64A - effectivly unlimited space, but does get some noise/light from the galley
64K - 3" extra space, and shielded by the lav from the galley

63B has a shield, and no extra space at all.