Groups | The western zone (I) | The middle zone (II) | The eastern zone (III) | ||||||
---|---|---|---|---|---|---|---|---|---|
No. of infested great gerbils | Percentagea (%) | Percentageb (%) | No. of infested great gerbils | Percentagea (%) | Percentageb (%) | No. of infested great gerbils | Percentagea (%) | Percentageb (%) | |
0 | 106 | 21.5 | 0.0 | 88 | 18.4 | 0.0 | 160 | 12.4 | 0.0 |
1–5 | 191 | 38.8 | 15.2 | 188 | 39.3 | 16.0 | 503 | 39.1 | 13.4 |
6–10 | 83 | 16.9 | 18.8 | 98 | 20.5 | 20.9 | 284 | 22.0 | 19.7 |
11–15 | 54 | 11.0 | 19.9 | 46 | 9.6 | 16.8 | 133 | 10.3 | 15.4 |
16–20 | 19 | 3.9 | 10.1 | 21 | 4.4 | 10.7 | 75 | 5.8 | 12.1 |
21–25 | 16 | 3.3 | 10.3 | 8 | 1.7 | 5.3 | 42 | 3.3 | 8.8 |
26–30 | 9 | 1.8 | 7.6 | 11 | 2.3 | 8.6 | 37 | 2.9 | 9.3 |
31–35 | 3 | 0.6 | 2.8 | 6 | 1.3 | 5.5 | 21 | 1.6 | 6.3 |
36–40 | 4 | 0.8 | 4.4 | 4 | 0.8 | 4.2 | 9 | 0.7 | 3.2 |
41–45 | 3 | 0.6 | 3.7 | 5 | 1.1 | 6.0 | 8 | 0.6 | 3.1 |
46–50 | 1 | 0.2 | 1.5 | 0 | 0.0 | 0.0 | 3 | 0.2 | 1.4 |
51–55 | 1 | 0.2 | 1.6 | 1 | 0.2 | 1.5 | 5 | 0.4 | 2.5 |
56–60 | 1 | 0.2 | 1.8 | 0 | 0.0 | 0.0 | 1 | 0.1 | 0.5 |
61–65 | 0 | 0.0 | 0.0 | 0 | 0.0 | 0.0 | 2 | 0.2 | 1.2 |
66–70 | 0 | 0.0 | 0.0 | 0 | 0.0 | 0.0 | 4 | 0.3 | 2.5 |
71–84 | 1 | 0.2 | 2.4 | 2 | 0.4 | 4.5 | 1 | 0.1 | 0.8 |