Notably there are substantial excess in 2018 or 2019 during the same weeks. Not quite sure what to make of that. If you were subtracting 2020 from 2018 then it

Notably there are substantial excess in 2018 or 2019 during the same weeks. Not quite sure what to make of that. If you were subtracting 2020 from 2018 then it looks like you would end up with 80 thousand fewer deaths in the first 10 weeks of 2020. What is that about.