| Views | |
| N2O emissions from production of HNO3 | 287 |
| November 2012 | December 2012 | January 2013 | February 2013 | March 2013 | April 2013 | May 2013 | |
| N2O emissions from production of HNO3 | 15 | 17 | 15 | 13 | 15 | 21 | 5 |
| Views | |
| Czech Republic | 137 |
| United States of America | 54 |
| China | 30 |
| Japan | 26 |
| Russian Federation | 17 |
| Germany | 8 |
| Hong Kong | 3 |
| Poland | 3 |
| Netherlands | 2 |
| Sweden | 2 |
| Views | |
| Redwood City | 22 |
| Redmond | 6 |
| Mountain View | 4 |
| Ostrava | 3 |
| Seattle | 3 |
| Washington | 3 |
| Ahnsen | 2 |
| Leipzig | 2 |
| Warsaw | 2 |
| Central District | 1 |