Oh , OK.
Or no. I guess a better example would be  how much of the light was coming in from outside rather than artificial light. So if it was a lot   if more was coming from outside , then there 'd be the bigger effect of the  of the  of the change in the  So every mean  every  all  all of the  the parameters that you have , especially the variances , are going to be affected by the overall variance.
Oh , OK. Uh - huh.
And so , in principle , you  if you remove that source , then , you know , you can