What are the minimum and maximum values for components in the various gamuts?

I don't find documentation on this. For example, in the following function calls (assuming I've already assigned values to the variables passed into the functions), what are the minimum and maximum possible valid (in-gamut) values?

`this_color = spectra.lab(L, a, b)`
`this_color = spectra.lch(L, C, H)`

--etc.

Thanks!