there's actually a better one in the CAP subforum posted by X-Act, i don't recall the name but it got necro'd rather recently so finding it should not be that hard.
Just looking real quick some things seemed off, like that a 252/252 steelix has worse defense than a 0/0?
other than that good work, nice chart, it's pretty cool.
EDIT: never mind i was reading the chart stupid. but now that we're on the issue why is there a 0/0 def and a 0/0 sdef? they are the exact same thing amirite? it would make more sense for your calcs to be done with 0/0, 252/0, 0/252, and 252/252 in that order imho
now note this was made in '08 but most of this stuff still seems fairly relevant save for special dragon.