Volatile Correction Model
TEOM VCM Correction King’s College Environmental Research Group (ERG) have developed a model to correct TEOM concentrations to “gravimetric equivalent” values, based on the purge
TEOM VCM Correction King’s College Environmental Research Group (ERG) have developed a model to correct TEOM concentrations to “gravimetric equivalent” values, based on the purge
Overview The process of annualisation allows for annual mean pollutant concentrations to be estimated from extrapolation of short-term monitoring results. This annualisation tool has been
Overview This Excel tool has been developed to help local authorities derive the NO2 concentration at locations relevant for exposure as it is not always
Why Use Diffusion Tubes Diffusive samplers (as described in paragraphs 7.197 – 7.210 of the Technical Guidance LAQM.TG(22)) are widely used for indicative monitoring of ambient
Overview Defra and the Devolved Administrations commissioned a Working Group, comprising representation from Defra and the Devolved Administrations, laboratories, the Health and Safety Laboratory, the
Overview Many local authorities are now carrying out diffusion tube co-location studies. A spreadsheet has been developed to assist diffusion tube users in calculating the
All content is available under the Open Government Licence v3.0, except where otherwise stated.
© Crown copyright
Cookie | Duration | Description |
---|---|---|
_ga | 2 years | The _ga cookie, installed by Google Analytics, calculates visitor, session and campaign data and also keeps track of site usage for the site's analytics report. The cookie stores information anonymously and assigns a randomly generated number to recognize unique visitors. |
_gat_UA-28909098-1 | 1 minute | A variation of the _gat cookie set by Google Analytics and Google Tag Manager to allow website owners to track visitor behaviour and measure site performance. The pattern element in the name contains the unique identity number of the account or website it relates to. |
_gat_UA-6712674-5 | 1 minute | A variation of the _gat cookie set by Google Analytics and Google Tag Manager to allow website owners to track visitor behaviour and measure site performance. The pattern element in the name contains the unique identity number of the account or website it relates to. |
_gid | 1 day | Installed by Google Analytics, _gid cookie stores information on how visitors use a website, while also creating an analytics report of the website's performance. Some of the data that are collected include the number of visitors, their source, and the pages they visit anonymously. |
Cookie | Duration | Description |
---|---|---|
HttpOnly | session | A secure cookie that can only be accessed from the server |