). Both the front and rear fans are activated. The fans are set to position 0.](sensors-00-00000f00){#f00-sensors-00-00000}  ![00% confidence interval of means of air velocity values according to analysis type and measurement section.](sensors-00-00000f00){#f00-sensors-00-00000}  ![00% confidence interval of means of air velocity values according to analysis type and h