Natural light is a dynamic resource that varies diurnally, seasonally, and with orientation.
Construct a light box according to the plan attached. It is important that the material is not translucent and that all corners are light-tight so that light enters the box only through the apertures that you have intended. Consequently, the covers for the apertures must be light-tight. Observation and recording of the lighting conditions can be done either by hand-renderings or photography. Align the box with its long axis running east to west with the observation port on the west end.