Minimum Z Height (or, How Low can you Go?)

Hello,

please, could someone who already received the machine, measure the distances a₁ and a₂?

a₁ = Distance from bottom of Z-Slider to bottom of Spindle Mount, when it is in lowest position
a₂ = Height of Spindle Mount

I want to plan a table with a lowered worksurface (floating wasteboard with possibility to work lower)

Thank you!

Thanks,