Is the twelfth floor of the high-rise building good?

It is good to buy the 12th floor, neither high nor low. It is the brightest floor. Taller trees do not reach this height, so the light is not easily blocked. Dust particles in the air are mainly found on floors below the 12th floor. The ventilation and lighting on the 12th floor are very good. The 8th to 11th floors are the dust layer in environmental science. Dust and harmful substances in the air have stayed at this height.