On meteorstations 1, 2 and 3, located at different altitudes on the mountain slope, atmospheric pressure was simultaneously measured. The obtained values are given in the table. Arrange these meteorological stations in order of increasing their altitude above sea level (from lowest to highest). Write the resulting sequence of numbers in the answer.

Explanation:

Atmospheric pressure decreases with increasing altitude. Therefore, the station with the highest atmospheric pressure is at the lowest altitude, and the station with the lowest atmospheric pressure is at the highest altitude.

Looking at the table:

• Station 1: 715 mm Hg
• Station 2: 679 mm Hg
• Station 3: 603 mm Hg

Ordering the stations by pressure from highest to lowest (which corresponds to altitude from lowest to highest):

1. Station 1 (715 mm Hg) - lowest altitude
2. Station 2 (679 mm Hg) - middle altitude
3. Station 3 (603 mm Hg) - highest altitude

Answer: 123