Where can I get a more detailed breakdown of Spectral Classes. Wikipedia only has it at Letter level rather than sublevel.
For example, https://en.wikipedia.org/wiki/Stellar_classification has B ranging from 10,000 - 30,000K. B0 is different to a B9, what would be the temperature range for a B0 or a B9 but not limiting to B but for all letters?
I'm not just looking at Temperature, I'm after Mass, Radius, Luminosity, Hydrogen Lines etc.
The closest that I've come is https://sites.uni.edu/morgans/astro/course/Notes/section2/spectraltemps.html but it doesn't mention types II or IV and doesn't have Radius or Mass.