Allan Broadribb

I plan to do a compression test this weekend on my 70-911E 2.2 as follows:

1. Warm up the engine.
2. Pull all the plugs
3. Crank the engine several times for each cylinder.
4. Write down the results.

Questions:

Am I missing anything here?
What range of numbers should I expect for an engine of this kind in good shape?

I have a leak down test from about 2 years ago. The numbers are all in the 94 to 97 range. What does this mean, what exactly is a leak down test?

Thanks