Table 2 Monthly operating costs ($) per site, by expense category and (%) of total cost

1

10,307 (95.1)

–

17 (0.2)

–

513 (4.7)

–

–

10,838

2

2

19,794 (95.4)

–

131 (0.6)

282 (1.4)

171 (0.8)

79 (0.4)

337 (1.6)

20,751

3

3

6878 (62.3)

–

–

–

4167 (37.7)

–

–

11,045

1

4

11,744 (90.0)

–

–

513 (3.9)

257 (2.0)

539 (4.1)

–

13,052

1

5

13,518 (95.5)

–

6 (0.0)

175 (1.2)

–

453 (3.2)

–

14,152

3

6

17,542 (99.0)

–

168 (1.0)

–

–

–

–

17,710

2

7

8400 (90.2)

454 (4.9)

7 (0.1)

134 (1.4)

–

268 (2.9)

50 (0.5)

9314

1

8

6641 (86.9)

–

–

390 (5.1)

–

611 (8.0)

–

7642

1

9

17,455 (92.8)

17 (0.1)

35 (0.2)

485 (2.6)

–

537 (2.9)

288 (1.5)

18,817

3

10

5881 (91.1)

–

–

376 (5.8)

–

196 (3.0)

–

6453

1

11

11,046 (97.2)

–

178 (1.6)

96 (0.8)

–

10 (0.1)

36 (0.3)

11,367

3

12

8346 (82.7)

573 (5.7)

366 (3.7)

377 (3.8)

–

227 (2.3)

122 (1.2)

10,010

3

13

4558 (88.9)

–

–

220 (4.3)

–

186 (3.6)

164 (3.2)

5129

2

14

4122 (48.8)

121 (1.4)

309 (3.7)

516 (6.1)

2759 (32.7)

620 (7.3)

–

8447

2

15

14,103 (87.9)

51 (0.3)

435 (2.7)

359 (2.2)

889 (5.4)

209 (1.3)

–

16,046

1

Median

10,307 (90.0)

0

17 (0.1)

282 (2.2)

0

209 (1.6)

0

11,045

Minimum

4122

0

0

0

0

10

0

5129

Maximum

19,794

573

435

516

4167

620

337

20,751