Projection of all inactive stars (see text and Table 2) onto evolutionary tracks with Z = 0.02, using the relative shifts in B − V and M_v caused by differences in metallicity between MS stars of same age and evolutionary status. Typical errors are indicated on the lower left. Metal-poor stars are marked by +, metal-rich η Boo by ×, the Sun by o. Dashed lines indicate approximate positions of the ZAMS and 50% MS lifetime. Most Mt. Wilson “flat” stars (entirely inactive) are found near the end of their MS evolution, having spent over 75% of their MS lifetime. In contrast, a few stars not entirely inactive, and thus true equivalents of the solar Maunder minimum state, are only a bit more evolved than the Sun.