774,829 items of data are available, covering 502,450 participants.
Array indices run from 0 to 14.
Units of measurement are metre-grid.
- There are 570 distinct values.
- Mean = 416944
- Std.dev = 109013
- 70 items above graph maximum of 716000
This location information is based on the postcode for an address at which the participant is believed to have been resident, derived from a number of sources.
The location co-ordinates use the Ordnance Survey (OSGB) reference, rounded to the nearest Kilometre. This East co-ordinate needs to be used in conjunction with the North co-ordinate in Field 22704.
For most purposes, grid co-ordinates rounded to a 1Km distance will provide sufficient information on location of residence at assessment. Research proposals that require location details to a finer level of granularity (i.e. 100m) should request Field 22701 and Field 22703, however special approval will be required to release the more detailed information.
In some cases participants will appear to be at the same location at consecutive times. This occurs because there is a difference of under 1Km in the distance between two consecutive locations according to the more granular data.