Table A-4. Acidification Indicators in CEE Countries.
| Albania | P | Emissions of SO2, NOx, NH3, dust from point sources |
| S | ||
| R | ||
| Bosnia Herzegovina | P | Emissions of SO2, NH3, and NOx - trends and sectors |
| S | ||
| R | ||
| Bulgaria | P | Air emissions of SO2, NOx, NH3 from stationary sources by sector; SO2, NOx, dust emission from energy and industrial plants; Number of motor vehicles |
| S | Air quality index; pH of precipitation | |
| R | Air quality monitoring network | |
| Croatia | P | Air emissions of SO2, NH3, and NOx from selected power plants; Transboundary transport of S, N; Number of vehicles; Transportation network |
| S | pH of precipitation | |
| R | Air pollution monitoring network | |
| Czech Republic | P | NOx, NH3, and SO2, dust, CxHy emissions by sector, from point sources and transport |
| S | SO2, NOx, dust concentrations; Forest affected by acid deposition | |
| R | Capacity of SO2/NOx abatement equipment of stationary sources | |
| Estonia | P | Air emissions of SO2, NOx, NH3, solids, from stationary sources; Acidification potential |
| S | pH of precipitation; Background monitoring data on conc. of NO2 and ozone; NOx and SO2 concentrations; Mean annual S & N deposition; Area of damaged forests; Average age of pine needles; Alkalinity of lakes | |
| R | Cars with catalytic converters; Acidification abatement incentives | |
| Hungary | P | SO2, NH3, and NOx emissions by sector; Deposition of S and N; TSP emissions by sector |
| S | Soil pH; Area of acidified soils; Air quality / regional SO2, NO2, dust | |
| R | National environmental protection programs | |
| Latvia | P | Emissions of SO2, NOx, NH3, CxHy, particles from stationary sources; Transboundary transport of S and N; Number of transport vehicles by type |
| S | Air quality: Trends of NOx concentration and number of cars; NO2 concentrations | |
| R | Targets for SO2 and NOx emissions | |
| Lithuania | P | Emissions of SO2, NH3, dust, and NOx |
| S | SO2, NOx, and dust concentrations in the main cities | |
| R | Renewable energy resources; Fuel prices & taxation | |
| FYRO Macedonia | P | |
| S | Average concentration of SO2 per year | |
| R | ||
| Poland | P | Air emissions of SO2, NOx, NH3, dust, by sector; S, N deposition/ winter, summer |
| S | pH of precipitation; S in pine needles; Forest affected by acid deposition by category | |
| R | Air pollution abatement | |
| Romania | P | Air emissions, total by sector NOx, SO2, NH3 |
| S | Acid and alkaline precipitation areas; pH of precipitation; SO4 in precipitation | |
| R | Air quality monitoring network | |
| Slovenia | P | Air emissions of SO2, NOx, NH3 smoke, total and from industry; Deposition of SO4, NO3 |
| S | Precipitation acidity | |
| R | SO2 emissions per unit of GDP | |
| Slovakia | P | Air emissions of SO2, PM, NOx, NH3 by sector; S deposition vs. critical deposition values |
| S | Air pollution index; Area affected by acid deposition by sp. of trees; pH of precipitation; Critical levels / loads of acidifying substances; Soil reaction & active aluminium content; Acidification of surface waters | |
| R | Areas requiring special air protection measures; Number of air monitoring stations; Transport of goods and passengers; International agreements; Economic instruments | |
| Dobris+3 | P | Emissions of SO2, NOx, NH3 - trends and sectors; Passenger and goods transport modal split; Cars per capita |
| S | Forest damage | |
| R | Prices of transport modes; Fuel types (consumption and distribution trends) | |
| GEO-2 | P | Emissions of SO2, NOx, NH3 |
| S | ||
| R | ||
| OECD 1993 | P | Index of acidifying substances; Emissions of SOx and NOx, ammoniac |
| S | Exceeding of the critical loads of potential acid in water and soil; Concentration in acid precipitation (pH, SO4, NO3); Total deposition of acidifying substances | |
| R | Percentage of car fleet equipped with catalytic converters; Capacity of SOx and NOx abatement equipment of stationary sources; Expenditure for air pollution abatement |