4. What is the approximate dew point Temperature of the air mass in question 3 above? (Use the chart backward by finding 12.3 on y-axis and extrapolating back to line). 5. Using the same air mass, let us assume that it warms to 35 C on a hot afternoon and maintains the same vapor pressure content of 12.3 mb. What is the relative humidity now? 6. Assuming a different air mass that has a relative humidity of 40% at a temperature of 25C, what would the AWV be for this air mass? 7. Explain how it is possible to have an air mass over a hot dry Arizona desert (33 N) with an AWV of 17mb, while an air mass over the moist region of Ohio (50 \"N) contains only me