The included pdf is information taken from the Climate Consultant 4 program developed by UCLA and shows the climate data from Salem, OR. Because of the climate which is generally a heating climate, the passive strategies most useful will place a high emphasis on insulation with some thermal mass and direct passive solar gain. The included case study shows a passive house in Sweden that has no conventional heating system but is in a climate that is cooler and cloudier than Woodburn’s, proving it possible to have a passive house in this climate.   Here is the Woodburn, OR Climate Data, but if you’re in the class, check the class folder which has a file with much better resolution.