Table 4.

Estimates of T_1/2 of “infectious” individuals with different late mask interventions.

Intervention	Multiplier in exponent estimated from graphs	Half-life	Weekly reduction in active COVID-19 cases (%)	Data in figure
Default values only	−0.016	43.3	11	6A, 6B, 7
Case 4	−0.048	14.4	29	6A, 6B, 7
Case 3	−0.091	7.6	47	6A, 6B, 7
Case 2	−0.294	2.36	87	6A, 6B, 7
Case 1	−0.301	2.30	88	6A, 6B, 7
Default values only (includes some masking)	−0.008	86.6	5	6C-E
10% extra reduction in transmission presumed to result from everyone wearing masks	−0.024	28.9	15	6C-E
99% extra reduction presumed to result from everyone wearing SCBA apparatus	−0.31	2.24	89	6C-E