Thanks Mr C.
I spent about 2 hours writting them in by hand last night... locating each one using the PDF, and estimating where the center of each mass is by reference to the chart.
...Two hours, and I only managed to get through 50N and 51N. Still, as it happens, that is half way through the document (page 9 of 18

)
...Two hours, and I forgot to upload it last night!!
Now I've got 8 hours at work without anything to distract me
Oooh. Top of page. I'll post the URL again:
www.benchapman.co.uk/preflight/altais/parser.asp