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. 2015 Jun;58(3):638–652. doi: 10.1044/2015_JSLHR-S-13-0270

Table 4.

Means, standard deviations, and ranges of PetCO2 values (mmHg) for steady-state and phonated portions of each breathing condition

Condition M SD Range
Eupnea steady state 32.72 2.72 26.53–37.46
Eupnea phonation 35.38 4.10 22.53–40.95
Hypocapnia steady state 18.61 1.89 14.28–22.46
Hypocapnia phonation 23.48 4.02 16.00–31.23
Hypercapnia steady state 50.16 1.50 47.10–52.50
Hypercapnia phonation 51.84 2.52 47.74–56.25