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COBS Statistics:
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Observations statistics for C/1987 W1

Total:
Number of active observers:
(total includes noncontributing observers)
17 of 2668
Number of active associations:
(total includes noncontributing associations)
5 of 17
Number of active countries:
(total includes noncontributing countries)
6 of 250
Total number of observations:
57
- Visual Observations:
57
- CCD Observations:
0

Top observers:
Total:
Visual:
CCD:
8 8 0
7 7 0
7 7 0
5 5 0
4 4 0
4 4 0
3 3 0
3 3 0
3 3 0
3 3 0
2 2 0
2 2 0
2 2 0
1 1 0
1 1 0
1 1 0
1 1 0

Top Associations:
Total:
Visual:
CCD:
32 32 0
9 9 0
8 8 0
7 7 0
1 1 0

Top Countries:
Total:
Visual:
CCD:
22 22 0
16 16 0
8 8 0
7 7 0
3 3 0
1 1 0