I interpreted it as overall average productivity drop, which makes sense since I wouldn’t expect most people to report productivity losses at the lower end of this scale (75°F). Rereading it, my interpretation still seems more likely, but it’s not totally clear which one the authors meant.
I interpreted it as overall average productivity drop, which makes sense since I wouldn’t expect most people to report productivity losses at the lower end of this scale (75°F). Rereading it, my interpretation still seems more likely, but it’s not totally clear which one the authors meant.