Table 7. Average of TESB, AESB and revised ESB at the sampling sites (mean ± S.D)

Biotic index/Site	St. 1	St. 2	St. 3	St. 4	St. 5
TESB 생물등급 판정 (A - D)	82.0 ± 15.6	85.0 ± 59.4	82.5 ± 53.0	73.5 ± 17.7	90.5 ± 17.7
	B	B	B	B	B
AESB 생물등급 판정 (A - D)	3.89 ± 0.22	3.94 ± 0.04	3.81 ± 0.09	4.23 ± 0.19	4.01 ± 0.16
	A	A	A	A	A
복합ESB 생물등급 판정 (A - D)	B	B	B	B	B