Ok, here are the 'standardised' reel change numbers from the previous posts

ANH (originally posted by Darth Mallwalker):

0 = first frame

711 = STAR WARS title card appear

28343 = reel 2

59025 = reel 3

90295 = reel 4

117270 = reel 5

147672 = reel 6

ESB (originally posted by msycamore):

0 = first frame

711 = STAR WARS title card appear

30988 = reel 2

59815 = reel 3

91134 = reel 4

122461 = reel 5

151133 = reel 6

ROTJ (originally posted by msycamore):

0 = first frame

712 = STAR WARS title card appear

25055 = reel 2

54317 = reel 3

84511 = reel 4

112587 = reel 5

142918 = reel 6

172032 = reel 7

Also, I haven't checked the TB of ROTJ yet, but msycamore has previously reported "11 frames around the reel breaks and a few more at various points" missing.