 
			
						On this page you will find main metadata related with the indicator you have selected.
Other metadata is also available, on the Metada System website, through next button Metadata System
						
| Characteristic | Description | 
|---|---|
| Name | Acidification index (Base 2006 - Mol H+ per t of gas emited) by Activity branch; Annual | 
| Regularity | Annual | 
| Source | Statistics Portugal, Environment satellite account | 
| First available period | 2006 | 
| Last available period | 2007 | 
| Dimensions | 
 | 
| Concepts | 
 | 
| Formule | (Emissions of nitrogen oxides (Base 2006 - t NO2-equivalents) x 1/46) + (Emissions of sulphur oxides (Base 2006 - t SO2-equivalents) x 1/32) + (Emissions of ammonia (Base 2006 - t) x 1/17) | 
| Measure unit (symbol) | Mole/ Tonne (Mol/ t) | 
| Power of 10 | 0 | 
| Observations | |
| Last update date | 18/10/2010 | 
				information presented in 31/10/2025