Mouth only with Nose Clip Nose only (N) Nose and Mouth (NM)
  Mean StdDev Range Mean StdDev of all measurements Range Mean StdDev of all measurements Range
No congestion 4.21 1.15 1.61- 6.52 4.89 1.04 1.54-6.24 4.63 0.95 1.78-6.62
Mild congestion       5.54 1.31 1.46-7.82 5.14 1.17 1.38-6.51
Moderate congestion       6.00 1.38 1.77-8.53 5.33 1.12 1.67-6.99
Severe congestion       6.47 1.35 1.66-7.91 5.58 1.11 1.49-6.83
Table 1: Average resistance values (Cm H20/Lps) for different test conditions.