Data
87,996 items of data are available, covering 83,313 participants.
Defined-instances run from 2 to 3, labelled using Instancing 
2.
Units of measurement are mm.
| 
| Maximum | 3.255 |  | Decile 9 | 2.779 |  | Decile 8 | 2.721 |  | Decile 7 | 2.677 |  | Decile 6 | 2.638 |  | Median | 2.602 |  | Decile 4 | 2.564 |  | Decile 3 | 2.521 |  | Decile 2 | 2.468 |  | Decile 1 | 2.39 |  | Minimum | 1.848 |  |   | 
Mean = 2.59123Std.dev = 0.15466783 items below graph minimum of 2.0012 items above graph maximum of 3.168 | 
2 Instances
Instance 2 : Imaging visit (2014+)
83,241 participants, 83,241 items
| 
| Maximum | 3.255 |  | Decile 9 | 2.779 |  | Decile 8 | 2.72 |  | Decile 7 | 2.676 |  | Decile 6 | 2.637 |  | Median | 2.601 |  | Decile 4 | 2.563 |  | Decile 3 | 2.52 |  | Decile 2 | 2.466 |  | Decile 1 | 2.388 |  | Minimum | 1.848 |  |   | 
Mean = 2.59023Std.dev = 0.1552275 items below graph minimum of 1.9972 items above graph maximum of 3.17 | 
Instance 3 : First repeat imaging visit (2019+)
4,755 participants, 4,755 items
| 
| Maximum | 3.14 |  | Decile 9 | 2.785 |  | Decile 8 | 2.728 |  | Decile 7 | 2.688 |  | Decile 6 | 2.651 |  | Median | 2.614 |  | Decile 4 | 2.58 |  | Decile 3 | 2.542 |  | Decile 2 | 2.494 |  | Decile 1 | 2.426 |  | Minimum | 1.851 |  |   | 
Mean = 2.60869Std.dev = 0.1435366 items below graph minimum of 2.067 | 
Notes
Mean thickness of precuneus in the left hemisphere generated by parcellation of the white surface using DKT parcellation
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