Data
86,657 items of data are available, covering 82,012 participants.
Defined-instances run from 2 to 3, labelled using Instancing 
2.
Units of measurement are ratio.
| 
| Maximum | 0.0274989 |  | Decile 9 | 0.0177336 |  | Decile 8 | 0.0167008 |  | Decile 7 | 0.016093 |  | Decile 6 | 0.0156202 |  | Median | 0.015219 |  | Decile 4 | 0.0148477 |  | Decile 3 | 0.0144923 |  | Decile 2 | 0.014106 |  | Decile 1 | 0.0136442 |  | Minimum | 0.0111566 |  |   | 
Mean = 0.0155139Std.dev = 0.00173012577 items above graph maximum of 0.0218231 | 
2 Instances
Instance 2 : Imaging visit (2014+)
81,876 participants, 81,876 items
| 
| Maximum | 0.0274989 |  | Decile 9 | 0.0177765 |  | Decile 8 | 0.0167334 |  | Decile 7 | 0.0161197 |  | Decile 6 | 0.015647 |  | Median | 0.0152416 |  | Decile 4 | 0.0148684 |  | Decile 3 | 0.0145104 |  | Decile 2 | 0.0141206 |  | Decile 1 | 0.0136535 |  | Minimum | 0.0111566 |  |   | 
Mean = 0.0155391Std.dev = 0.00174333540 items above graph maximum of 0.0218995 | 
Instance 3 : First repeat imaging visit (2019+)
4,781 participants, 4,781 items
| 
| Maximum | 0.0248716 |  | Decile 9 | 0.0169223 |  | Decile 8 | 0.0161621 |  | Decile 7 | 0.0156453 |  | Decile 6 | 0.0152363 |  | Median | 0.0148551 |  | Decile 4 | 0.0145438 |  | Decile 3 | 0.0142243 |  | Decile 2 | 0.0138879 |  | Decile 1 | 0.0134998 |  | Minimum | 0.0118571 |  |   | 
Mean = 0.0150833Std.dev = 0.0014181515 items above graph maximum of 0.0203448 | 
Notes
Inverted signal-to-noise ratio in the T1 - background spatial standard deviation divided by mean brain intensity
0 Related Data-Fields
There are no related data-fields