Systems and methods for estimating a difference in height between two floors in a building for use in estimating a height or an altitude of one of the two floors

A method for estimating a difference in height between two floors in a building, the method comprising:

• for a first time period during which a first stack effect is present in the building, determining a first estimated difference in height between a first floor of the building and a second floor of the building based on (i) one or more pressure value(s) measured at the first floor during the first time period, and (ii) one or more pressure value(s) measured at the second floor during the first time period;
• determining a first temperature that corresponds to an outdoor temperature during the first time period;
• for a second time period during which a second stack effect is present in the building, determining a second estimated difference in height between the first floor and the second floor based on (i) one or more pressure value(s) measured at the first floor during the second time period, and (ii) one or more pressure value(s) measured at the second floor during the second time period;
• determining a second temperature that corresponds to an outdoor temperature during the second time period;
• determining a third temperature;
• and
• estimating a height difference between the first floor and the second floor based on the first temperature, the second temperature, the third temperature, the first difference in height, and the second difference in height.