"Shadow lines can be visually measured for time of duration and a reducible estimate of their depth now, due to the steadily climbing arc of the early spring sun."
Go on, girl! Indeed! Lol.
When I'm making plans for new planting ideas, I get frustrated by the tree shadows in winter because there are no leaves on them so I feel like I can't make a good estimate of how much sun gets to a certain spot that's partly shady because it looks almost entirely sunny in winter! So tell me more about this reducible estimate!