Do you think it’s 2-3x averaged for the entire year?
I’m way more effective at writing complex code in an office. I’m not any more effective at random administrative tasks (due to procrastination tendencies, I might even be less effective at them). I’m modestly more effective at reading emails or design docs, but not integer factors more productive.
I’m a huge supporter of offices and was extremely salty when we got kicked out of them (for cost reasons). It’s why I love remote working now.