Being at work all day I can’t put my plants out for 2 then 4 then 6 then 8 hours etc. I can get up early and put them outside for 1 or 2 hours before I leave for work. Other than that by the time I get home there is not much available. The other option is I can leave them in my one window that gets actual direct sun light facing west. It gets about 3 hours of the setting sun. Would the sun coming through the window count towards hardening hours or does the Low-E glass filter out the strong rays I need to harden the plants. Thanks.