OK whoever gave you that data sheet either set the distributor up on a "distributor machine" or they checked the engine with an accurate timing light.
Here are some ways to determine your own curve
1 You can buy a so called "delay" or "readout" or "dial up" timing light. There's probably more slang terms. What these are, you use the light, and it has some sort of display --meter or digital--and a knob. You run the engine at some RPM and turn the knob until the marks appear to move to zero (TDC) Then your readout on the light tells you how much advance you have at that condition. I DON'T LIKE THESE because in a previous life I've run into quite a few that were just not accurate
2 You can degree your balancer
3 You can buy the correct timing tape for your balancer
To do 2 or 3, first thing you want is to verify that the balancer mark is accurate. It may or may not be. To do this, you need to buy or build a "piston stop," like this:
http://www.atlanticspeed.com/productcart/pc/catalog/comp_4795_2150_general.jpg
You can make one from an old spark plug.
Remove the no1 plug, make sure the piston is "down a ways" and unhook the battery ground for safety
You will surely have to play with the length setting. Wrench the engine around untion the piston stops at some point. You don't WANT it to stop at TDC, you want the piston "down somewhat."
At this point, make a temporary mark under TDC on the timing tab onto the balancer.
Do the same thing going counter clockwise
Now you'll have two temporary marks on the balancer. True TDC will be halfway in between, and if the factory mark is accurate, that is where it will be.
Now that you've done this, measure carefully AROUND you balancer with a small flexible tape. Do this a couple of times, to be accurate.
Now figure how many degrees per inch (360* in a circle!!) and measure off 40* with your tape, carefully. Check it at least twice, and scribe the balancer.
Now you can use a pair of dividers.
Divide the distance from TDC to 40* in half. You can make sure this is correct by checking both halves, so now you have 20 and 40
Now divide the 20 in half, and mark for every 10*
You can take this as far as you want. Once I have 10* on the dividers, I add another 10* out past the 40 marker to make 50
After checking TDC with your stop, and measuring your balancer size, you can also go to Summit or other speed outfit and buy timing tape for your balancer.
NOW that you finally have all this done, you can take a tach and your timing light, and measure the timing at different RPM to see what your curve IS.