We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
These are the maximum uncertainty values to assess whether periodic measurement results comply with emission limit values in environmental permits (formerly part of M2).
Toolkit for analysing and presenting information on future uncertainty in the transport system.
Simple guide to CHPQA uncertainty, covering definitions and how it is determined.
A growing body of evidence suggests that uncertainty is counter cyclical, rising sharply in recessions and falling in booms
Guidance on estimating uncertainty in Family Resources Survey-based analysis.
Transport analysis guidance (TAG) provides information on the role of transport modelling and appraisal.
This guide is suitable for both non-experts and experts on climate change
Do not include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. Please fill in this survey (opens in a new tab and requires JavaScript).