Survey period |
C.Cantin-C.Juby |
C.Juby-C.Blanc |
Mauritania |
Senegal-Gambia |
Total |
Feb-Mar 1992 |
52 |
68 |
70 |
|
190 |
Nov-Dec 1995 |
8 |
250 |
+ |
|
258 |
Nov-Dec 1996 |
50 |
400 |
+ |
|
450 |
Nov-Dec 1997 |
+ |
530 |
12 |
|
542 |
Nov-Dec 1998 |
+ |
180 |
+ |
|
180 |
Nov-Dec 1999 |
40 |
100 |
+ |
|
140 |
Nov-Dec 2000 |
90 |
190 |
+ |
|
280 |
Nov-Dec 2001 |
25 |
100 |
4 |
|
129 |
May-Jun 2002 |
47 |
191 |
|
|
238 |
Nov-Dec 2002 |
|
214 |
67 |
|
281 |