Table 1: log(CFU/mL) in the 0-800 µm layer of every specimen; standard deviation, median and mean are specified below.

Specimen	Control	CP	CHX	CHX + CP
1	6.52	3.40	2.78	3.26
2	6.00	4.13	4.17	2.70
3	6.72	3.38	4.87	2.78
4	6.82	3.66	4.74	2.70
5	6.81	3.43	3.99	3.96
6	8.02	4.12	4.16	3.86
7	7.01	2.78	3.34	3.72
8	8.00	4.53	4.19	3.26
SD	0.70	0.56	0.69	0.52
Median	6.82	3.55	4.16	3.26
Mean	6.99	3.68	4.03	3.28