The bar indicators on Bosch Intuvia

[JackStraw]

Hi All,
I hope you are well. Do you know what is the exact meaning / definition of these bars on Bosch Intuvia display?
I know this is to do with how much assistance you get from the electric engine at a given moment but is there any unit of measurement behind it?
ECO - 40% of assistance
TOUR - 100%
SPORT - 180%
TURBO - 270%

Thanks

 

[mjr]

I have only ridden Bosch a few times but isn't it measured in Watts? That was certainly the impression I got from the line graph shaped like a o_