If we are using the same SI data
, I can't see how I could misconstrue the season length when it's simply the difference in days between each maximum and minimum.
The linear trend that I've added to each graph shows little change since 1980.
All I can conclude is that they may be using different data (maybe MAISIE
) or the linear trend that I use is not as sophisticated as whatever method they are using.
I would love for someone else to download the same data and look at it in a spreadsheet and tell me where I'm going wrong, so far no one has.
With apologies to Pete Postlethwaite (in the film Brassed Off), I may only have a basic understanding of statistics but I can knock out a bloody good graph!