[null and void]

30 miles wide. Kinda explains why 95% of life died out. ~ Centurion2000

that must have had an exponentially greater climate impact than the C-T (alvarez) impact. ~ WoofDog123

We have two data points:

6 mile Ø bolide=65% wipe out
30 mile wide bolide=95% wipe out

We can now draw a line...

[Centurion2000]

The problem is that you are trying to graph something that has exponential yield increases with linear size increases. Looks like a good science project in the making

[WoofDog123]

actually it is almost certainly a curve asymptotic at %=100, need one more data point.