| Views | |
| A search for CO+ in planetary nebulae | 363 |
| November 2012 | December 2012 | January 2013 | February 2013 | March 2013 | April 2013 | May 2013 | |
| A search for CO+ in planetary nebulae | 19 | 20 | 23 | 17 | 12 | 24 | 25 |
| Views | |
| China | 104 |
| Ireland | 92 |
| United States of America | 78 |
| Japan | 11 |
| Ukraine | 11 |
| Netherlands | 8 |
| Czech Republic | 7 |
| Russian Federation | 3 |
| Brazil | 2 |
| United Kingdom | 2 |
| Views | |
| Gaillimh | 78 |
| Mountain View | 46 |
| Beijing | 41 |
| Oranmore | 14 |
| Washington | 8 |
| Prague | 7 |
| Seattle | 5 |
| São Paulo | 2 |
| Bangkok | 1 |
| Barry | 1 |