One property of automobile air bags that contributes to their ability to absorb energy is the permeability (ft3/ft2/ min) of the woven material used to construct the air bags. Understanding how permeability is influenced by various factors is important for increasing the effectiveness of air bags. In one study, the effects of three factors, each at three levels, were studied ("Analysis of Fabrics Used in Passive Restraint Systems-Airbags," J. of the Textile Institute, 1996: 554-571):
A (Temperature): 8°C, 50°C, 75°C
B (Fabric denier): 420-D, 630-D, 840-D
C (Air pressure): 17.2 kPa, 34.4 kPa, 103.4 kPa

Analyze this data and state your conclusions (assume that all factors are fixed)?

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Temperature 8° Pressure 34.4 17.2 103.4 Denier 420-D 630-D 840-D 73 80 35 43 125 157 155 91 98 234 233 332 322 288 271 477 464 Temperature 50° Pressure 34.4 17.2 103.4 Denier 420-D 630-D 840-D 52 51 16 12 90 100 125 118 72 78 149 155 281 264 169 173 338 350 Temperature 75° Pressure 34.4 Denier 420-D 630-D 840-D 17.2 103.4 276 281 213 211 307 311 37 31 30 95 106 91 100 170 160 102 98