Hey I made some graphs today on my journey to make some models of when lodgepole pine makes pollen and is receptive to pollen. Let's say you have three phenological phases like "working on making flowers but you can't see anything yet" "flowering" and "done flowering" or 0,1,2. As it warms up, individuals gradually transition from one stage to the next. That's the S shaped lines in the graph and the dots are n indivs in a given phase at that amount of warming.