Table 4.

Filtering efficiency of CMs against PM₁₀.

S. N.	Cloth masks (CMs)	Without filtration (μg/m3) mean ± S.D	With filtration (μg/m3) mean ± S.D	TIL (%)	Efficiency (%)
1.	CM 1	82.23 ± 7.34	63.62 ± 2.5	77	23
2.	CM 2	70.02 ± 7.32	49.71 ± 2.54	71	29
3.	CM 3	91.56 ± 7.28	61.23 ± 3.36	67	33
4.	CM 4	82.13 ± 19.59	62.34 ± 5.57	76	24
5.	CM 5	64.73 ± 8.85	56.82 ± 5.92	88	12
6.	CM 6	61.82 ± 2.16	53.38 ± 1.7	86	14
7.	CM 7	64.62 ± 1.9	59.63 ± 1.85	92	8
8.	CM 8	56.27 ± 2.35	50.59 ± 3.8	90	10
9.	CM 9	65.13 ± 2.51	59.7 ± 1.62	92	8
10.	CM 10	66.7 ± 3.48	61.79 ± 1.96	93	7
11.	CM 11	40.9 ± 22.87	33.97 ± 18.35	83	17
12.	CM 12	17.69 ± 3.38	16.19 ± 9.59	92	8
13.	CM 13	99.83 ± 28.56	94.5 ± 26.14	95	5
14.	CM 14	61.48 ± 5.79	40.3 ± 8.47	66	34
15.	CM 15	109 ± 138.37	95.53 ± 156.66	88	12
16.	CM 16	50.75 ± 15.16	44.66 ± 15.57	88	12