If a modern home is built too tightly, the air change rate per hour is reduced. ventilation may be increased to safe levels by

Mechanical ventilation system

Explanation:

Ventilation can be increased to safe levels by using mechanical ventilation system to bring in more fresh air.

There are many ways to provide ventilation for example

can u provide the graph and if its not possible

then i can tell u the segment where the

average time interval starts degrading is the segment where the car is slowing down