Title of statistical activity: Air pollution (until 2015)

Code of statistical activity: 10405

  1. Contact
  2. Metadata update
  3. Statistical presentation
  4. Unit of measure
  5. Reference period
  6. Institutional mandate
  7. Confidentiality
  8. Release policy
  9. Frequency of dissemination
  10. Accessibility and clarity
  11. Quality management
  12. Relevance
  13. Accuracy and reliability
  14. Timeliness and punctuality
  15. Coherence and comparability
  16. Cost and burden
  17. Data revision
  18. Statistical processing

1. Contact Individual or organisational contact points for the data or metadata, including information on how to reach the contact points.

1.1. Contact organisation The name of the organisation of the contact points for the data or metadata.

Statistics Estonia

1.2. Contact organisation unit An addressable subdivision of an organisation.

Economic and Environmental Statistics Department

1.3. Contact name The name of the contact points for the data or metadata.

Eda Grüner

1.4. Contact person function The area of technical responsibility of the contact, such as "methodology", "database management" or "dissemination".

Leading Statistician-Methodologist

1.5. Contact mail address The postal address of the contact points for the data or metadata.

51 Tatari Str, 10134 Tallinn, Estonia

1.6. Contact email address E-mail address of the contact points for the data or metadata.


1.7. Contact phone number The telephone number of the contact points for the data or metadata.

+372 625 9307

2. Metadata update The date on which the metadata element was inserted or modified in the database.

2.1. Metadata last certified Date of the latest certification provided by the domain manager to confirm that the metadata posted are still up-to-date, even if the content has not been amended.


2.2. Metadata last update Date of last update of the content of the metadata.


3. Statistical presentation

3.1. Data description Main characteristics of the data set described in an easily understandable manner, referring to the data and indicators disseminated.

Amount of pollutants discharged into air from stationary sources and transport by pollutant

3.2. Classification system Arrangement or division of objects into groups based on characteristics which the objects have in common.

Estonian Classifcation of Economic Activities (EMTAK 2008) based on NACE Rev. 2

Classification of Estonian administrative units and settlements (EHAK)

3.3. Sector coverage Main economic or other sectors covered by the statistics.

Estonia – total

3.4. Statistical concepts and definitions Statistical characteristics of statistical observations.

Non-methane volatile organic compounds (VOC) – VOC emissions are associated with the emergence of organic solvents, and the use of fossil fuels for transport and production. Volatile organic compounds are the source of photochemical smog. Some volatile organic compounds, such as benzene and 1,3-butadiene, are carcinogenic.

Nitrogen oxides (NO₂) – NO and NO₂ are included. For reasons of comparability, emissions of these gases are expressed in NO₂ units. Nitrogen oxides are formed mainly in internal combustion engines, and during the decomposition of nitrogen fertilizers in the soil. During combustion of the fuel nitrogen in the air reacts with oxygen, therefore, emissions of nitrogen oxides occur evenin case when the fuel does not contain nitrogen (for example, natural gas).

Stationary source – single source of air emissions with permanent location, included sources portable after after some time, or small group of air emission sources in the territory.

Carbon monoxide (CO) –a product of incomplete combustion of fuels. Carbon monoxide emissions depend on the fuel type and the combustion conditions.

Particulate matter – solid particles and liquid droplets contained in smoke, dust etc.

Sulphur dioxide (SO₂) – is formed in the combustion of fuels which contain sulphur. Sulphur dioxide emissions cause soil and water acidification and smog.

3.5. Statistical unit Entity for which information is sought and for which statistics are ultimately compiled.

An enterprise holding an air pollution permit

3.6. Statistical population The total membership or population or "universe" of a defined class of people, objects or events.

Pollution sources


Not applicable.

3.7. Reference area The country or geographic area to which the measured statistical phenomenon relates.

Estonia as a whole


3.8. Time coverage The length of time for which data are available.


3.9. Base period The period of time used as the base of an index number, or to which a constant series refers.

Not applicable.

4. Unit of measure The unit in which the data values are measured.


5. Reference period The period of time or point in time to which the measured observation is intended to refer.


6. Institutional mandate

6.1. Legal acts and other agreements Legal acts or other formal or informal agreements that assign responsibility as well as the authority to an agency for the collection, processing, and dissemination of statistics.


Not available.

Official Statistics Act


Statistical Office of the European Communities (Eurostat)

Organisation for Economic Co-operation and Development (OECD)

7. Confidentiality A property of data indicating the extent to which their unauthorised disclosure could be prejudicial or harmful to the interest of the source or other relevant parties.

7.1. Confidentiality - policy Legislative measures or other formal procedures which prevent unauthorised disclosure of data that identify a person or economic entity either directly or indirectly.

The dissemination of data collected for the purpose of producing official statistics is guided by the requirements provided for in § 34 and § 35 of the Official Statistics Act.

7.2. Confidentiality - data treatment Rules applied for treating the data set to ensure statistical confidentiality and prevent unauthorised disclosure.

Not applicable.

8. Release policy Rules for disseminating statistical data to interested parties.

8.1. Release calendar The schedule of statistical release dates.

Notifications about the dissemination of statistics are published in the release calendar, which is available on the website. On 1 October each year, the release times of the Statistical Database, news releases, main indicators by IMF SDDS and publications are announced in the release calendar (in case of publications – the release month).

8.2. Release calendar access Access to the release calendar information.


8.3. User access The policy for release of the data to users, the scope of dissemination (e.g. to the public, to selected users), how users are informed that the data are being released, and whether the policy determines the dissemination of statistical data to all users.

All users have been granted an equal access to official statistics: this means that the dissemination dates of official statistics have to be announced in advance and no user category (incl. Eurostat, state authorities and mass media) can have access to the official statistics (results of official statistical surveys) before other users. Statistical information is first published in the Statistical Database. In case a news release is published based on the same data, the information provided in the relevant news release is simultaneously published in the Statistical Database. Official statistics are available on the website at 8.00 a.m. on the date announced in the release calender.

9. Frequency of dissemination The time interval at which the statistics are disseminated over a given time period.


10. Accessibility and clarity

10.1. News release Regular or ad-hoc press releases linked to the data.

Not published.

10.2. Publications Regular or ad-hoc publications in which the data are made available to the public.

„Eesti statistika aastaraamat. Statistical Yearbook of Estonia”

10.3. Online database Information about on-line databases in which the disseminated data can be accessed.

Data are published under the heading „Environment/ Environmental pressure” in the Statistical Database in http://pub.stat.ee.

10.4. Microdata access Information on whether micro-data are also disseminated.

The dissemination of data collected for the purpose of producing official statistics is guided by the requirements provided for in § 34, § 35, § 36, § 37, § 38 of the Official Statistics Act. Access to micro-data and anonymisation of micro-data are regulated by Statistics Estonia’s „Procedure for dissemination of confidential data for scientific purposes”: https://www.stat.ee/dokumendid/51669.

10.5. Other References to the most important other data dissemination done.

Data serve as input for statistical activities 10001 „Environmental trends”, 10406 „Air emissions accounts”, 10601 „Material flow accounts”, 50101 „Estonian regional development” and 50201 „Sustainable development indicators”.

10.6. Documentation on methodology Descriptive text and references to methodological documents available.

Not available.

10.7. Quality documentation Documentation on procedures applied for quality management and quality assessment.

Not available.

11. Quality management Systems and frameworks in place within an organisation to manage the quality of statistical products and processes.

11.1. Quality assurance All systematic activities implemented that can be demonstrated to provide confidence that the processes will fulfil the requirements for the statistical output.

To assure the quality of processes and products, Statistics Estonia applies the EFQM Excellence Model, EU Statistics Code of Practice and the ESS Quality Assurance Framework (QAF). Statistics Estonia is also guided by the requirements provided for in § 7. „Principles and quality criteria of producing official statistics” of the Official Statistics Act.

11.2. Quality assessment Overall assessment of data quality, based on standard quality criteria.

Statistics Estonia performs all statistical activities according to an international model (Generic Statistical Business Process Model – GSBPM). According to the GSBPM, the final phase of statistical activities is overall evaluation using information gathered in each phase or sub-process (this information includes, among other things, feedback from users, process metadata, system metrics and suggestions from employees). This information is used to prepare the evaluation report which outlines all the quality problems related to the specific statistical activity and serves as input for improvement actions.

12. Relevance The degree to which statistical information meet current and potential needs of the users.

12.1. User needs Description of users and their respective needs with respect to the statistical data.

Ministry of the Environment

Ministry of the Interior

Ministry of Social Affairs


Users’ suggestions and information about taking them into account are available on the SE website https://www.stat.ee/statistikatood.

12.2. User satisfaction Measures to determine user satisfaction.

Since 1996 Statistics Estonia conducts reputation surveys and user surveys.

All results are available on the website https://www.stat.ee/user-surveys.

12.3. Completeness The extent to which all statistics that are needed are available.

13. Accuracy and reliability Accuracy: closeness of computations or estimates to the exact or true values that the statistics were intended to measure.
Reliability: closeness of the initial estimated value to the subsequent estimated value.

13.1. Overall accuracy Assessment of accuracy, linked to a certain data set or domain, which is summarising the various components.

The type of survey and the data collection methods ensure sufficient coverage and timeliness.

13.2. Sampling error That part of the difference between a population value and an estimate thereof, derived from a random sample, which is due to the fact that only a subset of the population is enumerated.

Not applicable.

13.3. Non-sampling error Error in survey estimates which cannot be attributed to sampling fluctuations.

Not measured.

14. Timeliness and punctuality

14.1. Timeliness Length of time between data availability and the event or phenomenon they describe.

The data are released 300 days upon the end of the reference year (T+300).

(2012) T+279

(2011) T+279

(2010) T+278

(2009) T+278

(2008) T+280

(2007) T+261

14.2. Punctuality Time lag between the actual delivery of the data and the target date when it should have been delivered.

The data have been published at the time announced in the release calender.

15. Coherence and comparability

15.1. Comparability - geographical The extent to which statistics are comparable between geographical areas.

The common CORINAIR methodology allows a cross-country comparison of the data.

15.2. Comparability - over time The extent to which statistics are comparable or reconcilable over time.

The data are comparable across time.

15.3. Coherence - cross domain The extent to which statistics are reconcilable with those obtained through other data sources or statistical domains.

Is coherent with Air Emission Accounts and Material Fow Accounts.

15.4. Coherence - internal The extent to which statistics are consistent within a given data set.

The outputs of the statistical activity are coherent.

16. Cost and burden Cost associated with the collection and production of a statistical product and burden on respondents.

17. Data revision Any change in a value of a statistic released to the public.

17.1. Data revision - policy Policy aimed at ensuring the transparency of disseminated data, whereby preliminary data are compiled that are later revised.

The data revision policy and notification of corrections are described in the dissemination policy of Statistics Estonia https://www.stat.ee/dissemination-policy.

17.2. Data revision - practice Information on the data revision practice.

The published data may be revised if the methodology is modified, if errors are discovered, if new or better data become available.

18. Statistical processing

18.1. Source data Characteristics and components of the raw statistical data used for compiling statistical aggregates.


Not used.


The following data are received from the Estonian Environment Agency: location (address) of stationary sources of pollution; amount of pollutants generated by a source and actually discharged into air; combustion equipment (type, number, parameters); amount of fuel used, its sulphur content; gas and dust cleaning devices (type, number, parameters); use of solvents and preparations containing solvents.


The data on mobile sources of pollution are calculated by the Estonian Environment Agency based on the data of the statistical activities 20206 „Annual accounts of energy consumption and production”, 22027 „Registered motor vehicles” and 22030 „Passenger transport by road”.

18.2. Frequency of data collection Frequency with which the source data are collected.


18.3. Data collection Systematic process of gathering data for official statistics.

Enterprises, which own stationary sources of pollution with the air pollution permit, special pollution permits, integrated environmental permit or waste incineration permit report to the county Environmental Board (by 31 January), the Environmental Board submits a reports to the Environment Agency (by 31 March).

Statistical Office gets aggregated data with the detailed data from Environment Agency by e-mail.

18.4. Data validation Process of monitoring the results of data compilation and ensuring the quality of statistical results.

Arithmetic and qualitative controls are used in the validation process, including comparison with other data. Before data dissemination, several checks on the internal coherence of the data are carried out. The data are compared with the data of previous periods and checked for inconsistencies.

18.5. Data compilation Operations performed on data to derive new information according to a given set of rules.

Aggregates by county and pollutant are compiled based on administrative data. Data on air emissions from stationary sources are based on statistical questionnaires completed by enterprises holding air pollution permits. Pollutant emissions have been calculated using the CollectER software of the European Environment Agency. The software was developed within the framework of CORINAIR, which is the air emissions sub-programme of CORINE (Coordinated Information on the Environment in the European Community) set up by the European Commission. The indicators to be published are calculated on the basis of the collected data.

18.6. Adjustment The set of procedures employed to modify statistical data to enable it to conform to national or international standards or to address data quality differences when compiling specific data sets.

Not applicable.

19. Comments Supplementary descriptive text which can be attached to data or metadata.

Not available.