Notes. Sources are sorted as in Table 1. R_* corresponds to the estimated stellar radius for the assumed distance (see Table 3), whereas β and υ_∞ are taken from the literature (references in Table 5). Clumping factors denoted by , , , , and r_in = 1.05 R_*, r_mid = 2 R_*, r_out = 15 R_* and r_far > 50 R_* are corresponding wind-region (cwr) boundaries. The maximum possible clumping factor in Region 4 still consistent with the data denoted by . Boldfaced names refer to stars with the best constrained clumping factors for all wind regions. Values separated by a forward slash (/) indicate alternate well-defined solutions, with the best-fit solution being always the number on the left. Values in parentheses refer to upper limits of the maximum clumping factor in the cwr (see Sect. 3.4). ^(*)Value interval for Ṁ_max and clumping factors derived from the stellar parameters in the literature (see Table 5 and Appendix A.2 for further discussion.). ^(a)Upper limit of Ṁ_max, derived from upper radio-flux limits. ^(b)Upper limit of Ṁ_max, derived from well-defined FIR fluxes, since upper radio-flux limits are inconsistent with all the data. ^(c)Well-defined Ṁ_max, derived from FIR fluxes, since well-defined radio fluxes are not consistent with all the data. ^(d)Upper limit of Ṁ_max derived from well-defined FIR fluxes. No radio fluxes measurements available.