Appendix 13. Calculated values for sunlight exposure time (min) at specified solar UV-A intensities as a function of survival of Streptococcus faecalis.

Appendix 13. Calculated values for sunlight exposure time (min) at specified solar UV-A intensities as a function of survival of Streptococcus faecalis.
Bacterial Survival (%)	Solar UV-A intensity (W/m²)

	2.0	4.0	6.0	8.0	10.0	12.0	14.0	16.0	18.0	20.0	22.0	24.0

95	6.0	3.0	2.0	1.5	1.2	1.0	0.9	0.8	0.7	0.6	0.5	0.5
90	12	6.2	4.1	3.1	2.5	2.0	1.8	1.5	1.4	1.2	1.1	1.0
85	19	9.4	6.3	4.7	3.8	3.2	2.7	2.4	2.9	1.9	1.7	1.6
80	26	13	8.7	6.5	5.2	4.4	3.7	3.3	2.9	2.6	2.4	2.2
75	34	17	11	8.4	6.7	5.6	4.8	4.2	3.7	3.4	3.0	2.8
70	41	21	14	10	8.3	6.9	5.9	5.2	4.6	4.1	3.8	3.4
65	50	25	17	12	10	8.4	7.2	6.3	5.6	5.0	4.6	4.2
60	59	30	20	15	12	9.9	8.5	7.4	6.6	5.9	5.4	5.0
55	70	35	23	17	14	12	9.9	8.7	7.7	7.0	6.3	5.8
50	81	40	27	20	16	13	12	10	9.0	8.1	7.3	6.7
45	93	46	31	23	18	15	13	12	10	9.3	8.4	7.7
40	106	53	35	27	22	18	15	13	12	11	9.7	8.9
35	122	61	41	30	24	20	17	15	14	12	11	10
30	140	70	47	35	28	23	20	18	16	14	13	12
25	161	81	54	40	32	27	23	20	18	16	15	13
20	187	93	62	47	37	31	27	23	21	19	17	16
15	220	110	73	55	44	37	31	28	24	22	20	18
10	267	134	89	67	54	45	38	33	30	27	24	22
9	280	140	93	70	56	47	40	35	31	28	25	23
8	293	147	98	73	59	49	42	37	33	29	27	24
7	309	154	103	77	62	51	44	39	34	31	28	26
6	326	163	109	82	65	54	47	41	36	33	30	27
5	348	174	116	87	70	58	50	43	39	35	32	29
4	374	187	124	93	75	62	53	47	42	37	34	31
3	407	203	136	102	81	68	58	51	45	41	37	34
2	454	227	151	114	91	76	65	57	50	45	41	38
1	534	267	178	134	107	89	76	66	59	53	49	44
0.5	615	308	205	154	123	102	88	77	68	62	56	51
0.1	802	401	267	200	160	134	114	100	89	80	73	67
0.01	1 069	534	356	267	214	178	153	13	119	107	97	89
Note: Data were obtained using equation 3 and mean experimental values.