I'll explain some of the terms I use before I'll delve any further into your problem. You might know atleast some of this but I am not sure about that so I'll go ahead anyways.
Tile set - Basically a collection of tile files declared in game's theater INI files The items in FinalAlert/FinalSun dropdown menu 'Terrain/Ground' are tile sets.
Tile file - Sometimes called TMP's by some. Every tile file that belongs to a tile set and all files belonging to same tileset have same base name, for an example 'clear', and two-digit numbering starting from 01 all way up to 99 (the actual maximum number is defined in tile set declaration in INI, but 99 is the maximum value you can use), and an optional additional prefix system where letters from a to g are appended at the end of the filename, i.e for an example you have clear01.tem, (.tem being temperate theater's file name extension), clear01a.tem, clear01b.tem and so on. These are used as additional variants for that particular file, except for certain cases like bridgeheads where they're used for damaged versions of that tile.
Tile - Each TMP format tile file consists of multiple tiles, which each occupy one in-game cell. Every tile in a TMP file has an index number, with indexing starting from 0.
In IsoMapPack5 format, the variable you listed as 'tile' is the number of the tile file/TMP in question in the theater, for an example if the first tile set in temperate theater has only 1 tile, this number for the first tile of the second tile set would be 1 (it's zero-based) and so on. On other hand, variable 'sub_tile' is the index/number of the tile in the TMP used for that particular map cell. The reason why you see lots of zero for this one is because all TMP tile files with only 1 tile, such as most of the grass, sand etc. tiles obviously always have it set to zero.
Thanks to the above fact of map format referring to specific tiles rather than tile sets, it would be very, very time consuming to figure out which number corresponds to which tile and create a comprehensive list of it. Then there's the fact that some mods add more terrain tiles, which ends up in extending the list and relying on some sort of hardcoded conversion table for any sort of tool in this case wouldn't really be a good idea. It could help a bit if you elaborated on what you're trying to accomplish, though.
Edited by Starkku, 04 June 2013 - 09:20 PM.