Difference in deco ceiling between 4.7.8 and 4.8.3

[John Smith]

Has there been a tweet to the way deco ceilings are calculated recently?

I’ve just updated to 4.8.3 and have the following
[image1.jpeg]

I’m running 75/75 and the reported ceiling is 12m.

On my older laptop, I’m still running 4.7.8 and it shows a different ceiling (6m)even though it has the same gradient factors.

[image2.jpeg]

Cheers

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