Normalized Dose (Number of COVID-19 virus RNA Copies per Hour) (Normalized to Case F)

Poor Ventilation*

Some Ventilation**

Good Ventilation***

Base

(No Air Purifier)

With HEPA

Air Purifier

Base

(No Air Purifier)

With HEPA

Air Purifier

Base

(No Air Purifier)

With HEPA

Air Purifier

Case

A

B

C

D

E

F

Dose Absorbed (h⁻¹)

5.20

1.50

3.42

1.30

1.50

0.90

Normalized

5.78

1.67

3.80

1.44

1.67

1.00

Effectiveness Rank

1-Best

5-Worst

5

3

4

2

3

1