Top: Asterisks indicate the best‐fitting values of μ and σ to the complete sample of LGA spirals. The heavy solid line, light solid line, and dotted line indicate the ﹩P=0.5﹩, 0.1, and 0.01 isoprobability contours. Red indicates shapes from K_s data; blue indicates shapes from B data. Dashed lines show scatter in the Tully‐Fisher relation (see § 5); contours are drawn, starting at the lower left, at 0.25, 0.5, 0.75, and 1.0 mag. Middle: Same as top, but for spirals of Hubble type Sc or later. Bottom: Same as top and bottom, but for spirals of type Sbc or earlier. F indicates Fasano et al. (1993), L indicates Lambas et al. (1992), R indicates Ryden (2004), and H indicates Huizinga & van Albada (1992).