Roughly how many "units" wide is the screen?

I'm curious how many "units" wide the screen is assuming typical resolution and the view fully zoomed out.

Based on the wiki values for some of the skills I'm thinking on average the screen is in the range of 100-120 units.

The max distance for arrow travel is listed as 120 and I know things can be hit at least half a screen away.

I'm just trying to figure out if 100% total aoe increase on a skill like discharge or ice nova equates to roughly the full screen.