Table 3.

Percentile distribution of bacteria at pH ranges

	pH range	Percentile concentration (cell/mg)
		P5	P10	P25	P50	P75	P90	P95
Lactobacilli	4.5–5	37,734	37,986	48,773	144,437	427,739	1,570,823	–
	5.0–5.5	64	184	3,132	17,073	76,295	137,577	215,897
	5.5–6.0	7	23	1,010	6,209	79,560	859,200	2,356,856
	6.0–6.5	1	46	143	1,443	4,109	43,098	–
	>6.5	3	22	125	556	1,622	858,798	6,641,739
Streptococci	4.5–5	18	28	82	1,380	26,971	48,401	–
	5.0–5.5	5	9	25	205	7,046	21,114	145,797
	5.5–6.0	1	159	1,188	1,761	12,435	85,956	134,346
	6.0–6.5	2	17	55	532	4,246	42,171	–
	>6.5	6	7	36	186	3,004	306,770	4,043,407
Prevotellae	4.5–5	8	8	14	101	1,554	5,054	–
	5.0–5.5	0	1	6	88	1,063	15,926	155,019
	5.5–6.0	1	17	499	2,402	16,317	60,926	151,229
	6.0–6.5	0	1	2	225	2,746	21,288	–
	>6.5	1	2	6	355	2,011	28,576	41,926
Fusobacteria	4.5–5	2	2	3	43	598	1,616	–
	5.0–5.5	0	0	1	2	8	1,013	10,040
	5.5–6.0	0	1	3	170	983	5,887	10,426
	6.0–6.5	0	0	0	17	481	5,283	–
	>6.5	0	1	2	17	546	5,656	12,162
Total load of bacteria	4.5–5	435,153	496,692	884,003	1,651,535	5,876,933	18,043,634	–
	5.0–5.5	50,513	80,862	264,972	598,880	780,630	2,837,841	12,010,584
	5.5–6.0	10,985	30,779	112,218	1,292,971	4,522,828	16,140,983	27,998,151
	6.0–6.5	1,434	16,203	43,337	161,326	429,581	2,285,414	–
	>6.5	2,033	4,752	17,766	48,980	344,247	7,354,811	84,180,190