Rune ilvl

[BOB2]

Short answer, no.
This isn't true for any items, and especially (?) not for runes.  Runes don't have an ilvl in the usual sense, they are "simple items" and their origin is not recorded.
That isn't really important though, as in general, required level is no indication of where something can be found.
This bit is more or less right.  Monsters in an area of level 68 will drop items of ilvl 68, which is one of the factors involved in exactly what they can drop.  More importantly, they will, where possible, upgrade their TC to a TC of level ~68 (as near as they can get) which in this case is the key determinant of what can drop.

Thanks for your replies.

Concerning ilvl, I was completely false so :( (there is a glitch on dii.net where ilvl is told to be clvl for gems and runes.)

For the monster area, I express it badly, but I grossly understood what you replied to me here and in the basin.

Cham is rune 32.  This means to drop one, a monster must be able to drop from at least Runes 16 which is the lowest rune TC that contains it.
Runes 16 is only dropped directly by Act 4 (H) Good.  The "Good" TCs drop all the runes, charms, jewels, gems and jewellery you see in the game.
Act 4 (H) Good is contained in many monster TCs, but typically require a TC of at least level 78 to drop them.  Less than that, and you only get a chance of Act 3 (H) Good which only contains up to Ber.

Do you know where I could get rune TC? which columns from which txt files?

Thanks again.

PS: I really like your which only contains up to Ber :D