Table 2. Ninety percent normal range for peak compensated static conductance (G), susceptance (B), admittance (Y), and phase angle (f) obtained from 20–30-year-old adults (adapted from Wiley et al., 1987). The values at 226 Hz were obtained from 239 ears of 127 subjects, and the values at 678 Hz were obtained from 184 ears with single-peaked tympanograms.

G B V f
(mmhos) (mmhos) (mmhos) (degrees)
226 Hz Lower limit 0.10 0.31 0.33 56
Upper limit 0.85 1.64 1.84 76
678 Hz Lower limit 0.60 0.87 1.06 32
Upper limit 4.95 3.92 6.31 59