Data
306,671 items of data are available, covering 107,579 participants.
Defined-instances run from 0 to 1, labelled using Instancing 
2.
Array indices run from 0 to 5.
Units of measurement are diopters.
| 
| Maximum | 55.79 |  | Decile 9 | 44.58 |  | Decile 8 | 43.89 |  | Decile 7 | 43.44 |  | Decile 6 | 42.99 |  | Median | 42.61 |  | Decile 4 | 42.24 |  | Decile 3 | 41.82 |  | Decile 2 | 41.36 |  | Decile 1 | 40.71 |  | Minimum | 30.63 |  |   | 
Mean = 42.6287Std.dev = 1.5354170 items below graph minimum of 36.8462 items above graph maximum of 48.45 | 
2 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
95,197 participants, 264,136 items
| 
| Maximum | 55.79 |  | Decile 9 | 44.58 |  | Decile 8 | 43.89 |  | Decile 7 | 43.44 |  | Decile 6 | 43.05 |  | Median | 42.67 |  | Decile 4 | 42.24 |  | Decile 3 | 41.87 |  | Decile 2 | 41.36 |  | Decile 1 | 40.71 |  | Minimum | 30.63 |  |   | 
Mean = 42.6359Std.dev = 1.53812151 items below graph minimum of 36.8458 items above graph maximum of 48.45 | 
Instance 1 : First repeat assessment visit (2012-13)
15,301 participants, 42,535 items
| 
| Maximum | 50.07 |  | Decile 9 | 44.53 |  | Decile 8 | 43.89 |  | Decile 7 | 43.38 |  | Decile 6 | 42.99 |  | Median | 42.61 |  | Decile 4 | 42.19 |  | Decile 3 | 41.82 |  | Decile 2 | 41.31 |  | Decile 1 | 40.66 |  | Minimum | 34.51 |  |   | 
Mean = 42.5836Std.dev = 1.5176318 items below graph minimum of 36.794 items above graph maximum of 48.4 | 
Notes
This is the weak meridian of keratometry results taken at 3mm for the left eye
1 Related Data-Field
| Field ID | Description | Relationship | 
|---|
| 5098 | 6mm weak meridian (right) | Current Field is the opposite-side complement to  Field 5098 |