For insect models, the Comparison to Last Year tab provides degree-day and insect development comparisons between this year, previous year, and the 10-year average. Hovering over the lines/bars with the mouse will show individual data points.
The left chart shows how many days last year’s predictions were ahead or behind this year’s predications (above or below the zero line; the zero line representing this year’s data). Similarly, the graph also shows how the 10-year average compares to this year’s model predictions.
The chart on the top right shows these differences for today’s model predictions only. The graph indicates how many days today’s prediction differs from last year, the 10-year average, as well as the coldest year of the past decade.
The chart on the bottom right compares this year’s and last year’s pest phenology.