Respiratory exchange ratio. The respiratory exchange ratio (RER) is the ratio between the amount of carbon dioxide (CO2) produced in metabolism and oxygen (O2) used.[1] Humans typically inhale more molecules of oxygen than they exhale of carbon dioxide because air contains much more oxygen by volume.
Jackson Hole Wyoming Weather & Seasons. 1  The busiest season in Jackson is the summer, particularly in July and August where visitors can enjoy temps between 70 and 90 degrees. September is still summery in temperature (besides cold nights), but is quieter. The fall months, October and November, are unpredictable.
The average hourly wind speed in Jackson is gradually increasing during September, increasing from 4.2 miles per hour to 4.9 miles per hour over the course of the month. For reference, on February 25, the windiest day of the year, the daily average wind speed is 6.2 miles per hour, while on July 29, the calmest day of the year, the daily average wind speed is 3.8 miles per hour.