Minimum.......| 22 | 20 | 22 | 20 | 25 | 24
Average.......| 4,800 | 5,100 | 4,500 | 4,200 | 6,900 | 5,900
------------------+--------+--------+--------+---------+---------+--------
Bacteria, effluent:
Maximum.......| 4,000 | 1,300 | 3,200 | 5,400 | 12,800 | 2,400
Minimum.......| 2 | 3 | 1 | 1 | 2 | 2
Average.......| 160 | 85 | 110 | 120 | 190 | 180
------------------+--------+--------+--------+---------+---------+--------
Percentage, | | | | | |
Reduction.......| 96.7 | 98.3 | 97.6 | 97.3 | 97.3 | 97.0
------------------+--------+--------+--------+---------+---------+--------
Number of samples examined for _bacillus coli_ in influent:
10 c.c........| 549 | 478 | 476 | 436 | 325 | 336
1 c.c........| 560 | 492 | 486 | 445 | 335 | 342
0.1 c.c......| 525 | 459 | 452 | 413 | 318 | 317
0.01 c.c.....| 511 | 443 | 439 | 405 | 308 | 304
0.001 c.c....| 500 | 434 | 429 | 394 | 299 | 294
------------------+--------+--------+--------+---------+---------+--------
Number of samples examined for _bacillus coli_ in effluent:
10 c.c........| 512 | 452 | 454 | 404 | 296 | 309
1 c.c........| 513 | 454 | 457 | 406 | 299 | 311
0.1 c.c......| 480 | 419 | 426 | 383 | 271 | 286
0.01 c.c.....| 478 | 406 | 410 | 367 | 261 | 276
0.001 c.c....| 478 | 406 | 410 | 367 | 261 | 276
------------------+--------+--------+--------+---------+---------+--------
Number samples positive, influent:
10 c.c........| 226 | 211 | 201 | 258 | 136 | 152
1 c.c........| 127 | 123 | 116 | 108 | 81 | 93
0.1 c.c......| 55 | 59 | 54 | 51 | 43 | 42
0.01 c.c.....| 26 | 34 | 33 | 33 | 27 | 25
0.001 c.c....| 6 | 6 | 5 | 6 | 3 | 3
------------------+--------+--------+--------+---------+---------+--------
Number samples positive, effluent:
10 c.c........| 100 | 109 | 134 | 98 | 94 | 106
1 c.c........| 51 | 61 | 55 | 56 | 46 | 50