Here you can find on minimum-maximum mod values, sorted by rarity and location. The value ranges depend on mod bonus type, not on item or component (mod/inscription) type. All the listed values have been observed and confirmed recently, except those with a question mark ('?') behind them. If you have any questions, or see a mistake, please let us know.
An incomplete list of observed pre-nerf inherent mod values is also given at the end: only the minimum values per type are shown, because the maximum values were the same as post-nerf (except maybe in beta/very early game). The pre-nerf table is preliminary and incomplete, please contribute new values if you can.