Here are the charts. X-Phasers on Overload do 1.5 listed damage of a regular PH-1. Plasma Snares were loading in 1.5 turns before instead of 3 and to be honest I haven't gotten around to checking if they ever fixed that. People seemed to like it though and it may not have been addressed. Everything else in the manual is correct to the best of my knowledge.
Ph-G2
Range: 0 1 2 3 4-8 9-15 16-30 31-50
-------4 4 4 4--4---3-----2-----1
-------4 4 4 4--4---3-----2-----1
-------4 4 4 4--3---2-----2-----1
-------4 4 4 3--3---2-----1-----0
-------4 4 4 3--2---2-----1-----0
-------3 3 3 2--1---1-----0-----0
Ph-A
Range: 0-1 2-4 5-6 7-10 11-16 17-20 21-24 25-31 32-40
--------9---8---7---6-----5-----5-----4------3-----2
--------8---7---6---5-----5-----4-----3------2-----1
--------7---5---5---4-----4-----4-----3------1-----0
--------6---4---4---4-----4-----3-----2------0-----0
--------5---4---4---4-----3-----3-----1------0-----0
--------4---4---3---3-----2-----2-----0------0-----0
Ph-B NOTE: This is damage on bare hull. Against shields it is 1/3 of listed.
Range: 0-1 2-4 5-6 7-10 11-16 17-20 21-24 25-31 32-40
--------15-15--13--13----9------9-----6-----6-----2
--------15-15--13---9----9------6-----6-----3-----2
--------15-15--13---9----6------6-----3-----2-----2
--------15-15---9---6----6------3-----3-----2-----0
--------15-15---9---0----0------0-----0-----0-----0
--------15--0---0---0----0------0-----0-----0-----0
Here is a revised damage chart for the Plasma X. The OP manual is not correct. There was some variance on damage at the bracket ends, but I would chalk that up to the model and the placement of the Plasma launchers on the ship (what I mean by this is that I would fire two different Plasma X's from the same range and get two different damage values, but it was not consistant). As you can see the range breaks are a little different as Plasma X degrades faster.
Range:
0 to 8.25 = 40 damage
8.26 to 12.15 = 29 damage
12.16 to 16.15 = 20 damage
16.16 to 20.15 = 13 damage
20.16 to 23.30 = 6 damage
23.31 to 24.10 = 1 damage
Here is a revised damage chart for the Plasma Snare. The OP manual is not correct. I used Taldren's basic range bracket styles, but most people know to stop at .99 of a range to get the true damage inflicted, i.e. range 10 is really 9.99. There was some variance on damage at the bracket ends, but I would chalk that up to the model and the placement of the Plasma launchers on the ship (what I mean by this is that I would fire two different Plasma E's from the same range and get two different damage values, but it was not consistant).
Range:
0 to 10 = 20 damage
11 to 15 = 14 damage
16 to 20 = 10 damage
21 to 23 = 6 damage
24 = 3 damage
25 = 1 damage