Size and shape of stills have a lot to do with it as does wood quality and the age of the malt (In general the peat ppm levels fall with age).
In relation to the PPM level in the spirit not being calculated I was wrong and I obviously did not logically think about it too long. It can be calculated by chemists but I don't think the Distilleries bother and prefer just to stick to the PPM peat levels of the original malt.
So this got me thinking is there any facts and figures out there and I did a few googles.
I came across an interesting article about research done on PPM phenol levels (in regards topeat) in malt and new spirit and then whisky.
Laphroaig uses malt circa 35-40ppm but the new make is measured at about 25ppm (71.4-62.5% of original levels).
Yet Ardbeg uses a malt with 50ppm peat levels and new make is surprisingly only 17-24ppm (34-48%) (this rings true for me as I find Laph more peaty in general)
This is in stark contrast to Bruichladdich Octomore (First batch) which had a Malt peat PPM level of 80.5 yet the New make was only 29.6ppm (36.7%).
Batch 2 was 167ppm with spirit comanding a level of 46.4ppm (27.8%) so as you can see even the same distillery cannot maintain it's ratio's.
In the case of Laphroaig and age the phenol levels drops to 8-10ppm after 10years in wood and down to 6ppm at 30years.
But even facts like these I don't think tell the full story ... the actual spirit it self, maturation and cask type can play a big part on the peat effect. A whiskey may have an equally high PPM level with another whiskey but not neccessairly show the same effect. Laphroaig and Lagavulin have similar if not identical ppm levels but reveal the peat on the palate in totally different ways. We all know the 16yo Laga but I've tasted but yet the 18yo Laph seem to have a more agressive peatiness eventhough it is older. A very interesting topic and one I'd love to learn more about.
Hopefully Turf Mór is a cracking peat monster
