Since i have the german version of the game i wonder if all of your mods work there? I was a big fan of MW modding so i know that the names of the exterior cells, etc. are problematic.. this was fixed in Oblivion, because every cell got a uniqe ID there but well.. you never know. ;)
Its the exact same variable like in Oblivion, so yes, it is 'set timescale to x' in the game. Since i hate running through the world at night a value of '5' is fine for me. This means 1 RL hour = 5 IG hours. I think a value of 8 or 10 should be good for most players.