In the standard atmosphere, a pressure of 500 mb occurs at an altitude of 5574 m (18,289 the altitude of the 500-mb level over lincoln at the time of this sounding was the 500-mb level of the standard atmosphere. this relatively warm atmospheric column reflected the conditions that generally exist throughout the troposphere during late summer and early fall in mid-latitudes.
a. higher than
b. the same as
c. lower than