@JonathanZsupportsMonicaC, @AlexanderGruber, hey you guys, I put some final comments on the answers on my seasonal variation question. Thanks so much to you two and everyone else. I've decided to integrate all these different formulas as selectable options in my simulation, to see what effect they have. But it's taking longer than expected--the bane of the programmer's existence. Once I get it in place I'll send you guys a link or something. Thank you all so much!